Raw plus/minus for 93-94, 94-95, 95-96 seasons

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Re: Raw plus/minus for 93-94 season 

Post#21 » by Dipper 13 » Sat Aug 30, 2014 12:14 pm

I wonder how your net ratings of your shot charts would look if you used this method.


I did not keep track of minutes at all, just possessions. There is probably highlight bias as well, since the games available on the internet tend to be the one where the star has a big game. I am interested in seeing more of the NBA plus/minus figures from other media guides.
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Re: Raw plus/minus for 93-94 season 

Post#22 » by Dipper 13 » Sat Aug 30, 2014 12:17 pm

However, I would be even more interested in the NBA.com shot charts. Was Barkley really over an 80% FG finisher around the basket year in, year out? Based on the 84 game sample, he looks like a major outlier in NBA history.
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Re: Raw plus/minus for 93-94 season 

Post#23 » by ElGee » Sat Aug 30, 2014 3:23 pm

lorak wrote:
Doctor MJ wrote:-Malone clearly beating Stockton is really worth noting. As I've been saying, I wanted to see if Stockton's +/- trend really continued back through the S & M prime. Not looking likely.


Keep in mind it's just raw +/-. Malone also beats Stockton in raw +/- in 1997, 1998 or 1999, but RAPM tells quite different story.


Wait, it does? What data do you have?

Across the Court (NPI RAPM)
    1997 Malone +4.4 | Stockton +3.9
    1998 Malone +4.6 | Stockton +4.7

If we use Doc MJ's scale, at their minutes played, the per game impact is:
    1997 Malone +5.9 | Stockton +5.0
    1998 Malone +6.3 | Stockton +4.9

Raw data from nba.com for 97 is Karl +9.4 on | Stock +8.0 on and in 98 Karl 7.2 | Stock +7.8.
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Re: Raw plus/minus for 93-94 season 

Post#24 » by lorak » Sat Aug 30, 2014 4:18 pm

ElGee wrote:
lorak wrote:
Doctor MJ wrote:-Malone clearly beating Stockton is really worth noting. As I've been saying, I wanted to see if Stockton's +/- trend really continued back through the S & M prime. Not looking likely.


Keep in mind it's just raw +/-. Malone also beats Stockton in raw +/- in 1997, 1998 or 1999, but RAPM tells quite different story.


Wait, it does? What data do you have?
.


I was writing from memory, but now I have data in front of me and their rank in RAPM is:


NPI

1997 Malone 3rd, Stockton 29th
1998 Stockton 4th, Malone 5th
1999 Stockton 8th, Malone 19th
2000 Stockton 6th, Malone 44th

PI
1998 Stockton 7th, Malone 8th
1999 Stockton 11th, Malone 16th
2000 Stockton 7th, Malone 19th

and raw +/- advantage:
1997 Malone
1998 Malone
1999 Malone
2000 Stockton

So doesn't seem like raw +/- is good indicator of RAPM advantage. Sometimes it's right, but sometimes it isn't, without other information it's impossible to say which one is true in particular case.
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Re: Raw plus/minus for 93-94 season 

Post#25 » by Doctor MJ » Sat Aug 30, 2014 5:41 pm

lorak wrote:
Doctor MJ wrote:-Malone clearly beating Stockton is really worth noting. As I've been saying, I wanted to see if Stockton's +/- trend really continued back through the S & M prime. Not looking likely.


Keep in mind it's just raw +/-. Malone also beats Stockton in raw +/- in 1997, 1998 or 1999, but RAPM tells quite different story.


The best metric we have for '94 is Net +/-, so that's what I was using. Even if that were debatable, I'd still use it because by true raw +/- Malone plays so many more minutes in the late '90s that using it for this comparison would skew what Stockton's actual competitive advantage is in +/- and why we've made note of it.

Here are the net +/- for these two in the years in question:

'94 Malone +17.4, Stockton +7.3
'97 Malone +12.8, Stockton +11.4
'98 Stockton +13.4, Malone +9.8
'99 Stockton +11.2, Malone +9.9

So:

1) '94 tells a vastly different story than those later year.
2) Remember that PI RAPM is only available for '98 & '99, so to the extent '97 even a little bit seems to go along with '94, this if anything helps my case.
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Re: Raw plus/minus for 93-94 season 

Post#26 » by colts18 » Sun Aug 31, 2014 12:44 am

We now have 8 years of plus/minus data for Stockton and Malone (94, 97-03). Here is what their total plus/minus are for that span

Stockton +3306 Plus/Minus
+8.4 on court per 48 minutes
-1.5 off court per 48 minutes
+9.9 Net +/- per 48 minutes

Malone +3264 Plus/Minus
+6.8 on court per 48 minutes
-2.2 off court per 48 minutes
+8.9 Net +/- per 48 minutes

Stockton has the slight advantage based on that though Malone did play 4200+ more minutes (525 MP per season) than Stockton in that span.
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Re: Raw plus/minus for 93-94 season 

Post#27 » by ceiling raiser » Sun Aug 31, 2014 1:11 am

colts18 wrote:We now have 8 years of plus/minus data for Stockton and Malone (94, 97-03). Here is what their total plus/minus are for that span

Stockton +3306 Plus/Minus
+8.4 on court per 48 minutes
-1.5 off court per 48 minutes
+9.9 Net +/- per 48 minutes

Malone +3264 Plus/Minus
+6.8 on court per 48 minutes
-2.2 off court per 48 minutes
+8.9 Net +/- per 48 minutes

Stockton has the slight advantage based on that though Malone did play 4200+ more minutes (525 MP per season) than Stockton in that span.

Stockton has been in the conversation a bit recently. Hopefully I can get ahold of the 94-95 and 95-96 data before his first runoff (probably coming up soon).
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Re: Raw plus/minus for 93-94 season 

Post#28 » by colts18 » Sun Aug 31, 2014 1:17 am

fpliii wrote:
colts18 wrote:We now have 8 years of plus/minus data for Stockton and Malone (94, 97-03). Here is what their total plus/minus are for that span

Stockton +3306 Plus/Minus
+8.4 on court per 48 minutes
-1.5 off court per 48 minutes
+9.9 Net +/- per 48 minutes

Malone +3264 Plus/Minus
+6.8 on court per 48 minutes
-2.2 off court per 48 minutes
+8.9 Net +/- per 48 minutes

Stockton has the slight advantage based on that though Malone did play 4200+ more minutes (525 MP per season) than Stockton in that span.

Stockton has been in the conversation a bit recently. Hopefully I can get ahold of the 94-95 and 95-96 data before his first runoff (probably coming up soon).


Have you tried emailing Harvey Pollack? He might have some copies of his book left. Based on a google search, I haven't found a copy yet of those two books.
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Re: Raw plus/minus for 93-94 season 

Post#29 » by ceiling raiser » Sun Aug 31, 2014 1:20 am

colts18 wrote:
fpliii wrote:
colts18 wrote:We now have 8 years of plus/minus data for Stockton and Malone (94, 97-03). Here is what their total plus/minus are for that span

Stockton +3306 Plus/Minus
+8.4 on court per 48 minutes
-1.5 off court per 48 minutes
+9.9 Net +/- per 48 minutes

Malone +3264 Plus/Minus
+6.8 on court per 48 minutes
-2.2 off court per 48 minutes
+8.9 Net +/- per 48 minutes

Stockton has the slight advantage based on that though Malone did play 4200+ more minutes (525 MP per season) than Stockton in that span.

Stockton has been in the conversation a bit recently. Hopefully I can get ahold of the 94-95 and 95-96 data before his first runoff (probably coming up soon).


Have you tried emailing Harvey Pollack? He might have some copies of his book left. Based on a google search, I haven't found a copy yet of those two books.

I haven't tried yet, I think he's 92 years old and while he's a possibility, I'm going to try other avenues first. I do have another contact in the Sixers FO that I could ask first, so I may do that.

For now though, I posted on the APBR board:

http://www.apbr.org/forum/viewtopic.php?f=27&t=5390

and PMed John Grasso (author of the Historical Dictionary of Basketball), who mentioned those books in his bibliography.
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Re: Raw plus/minus for 93-94 season 

Post#30 » by Double Clutch » Mon Sep 1, 2014 4:58 am

Hey fpliii, I found some information that might interest you in regards to the 1995 and 1996 books. Not sure if you can directly contact the author of these articles and in some cases, the articles don't have a listed author for some odd reason but they all refer to those books in one way or the other.

Excerpt below that contains Seattle's +/- data midway into the 1994-95 season (Feb 27, 1995 to be exact). Not sure if this data was collected from Pollack or whether a Seattle Times writer was keeping track of it on his own or perhaps some of the coaching staff/scouts were responsible for it.

Spoiler:
Karl's most valued statistic is "plus-minus," the number of points gained or lost while a player is in a game.

The team's leader is Nate McMillan. With him in the game, the Sonics have profited 413 points. Gary Payton has 318 points, Detlef Schrempf 312, Sam Perkins 279, Vincent Askew 233, Shawn Kemp 180 and Kendall Gill 89.

McMillan tops the category despite bone spurs that have limited his quickness.

http://community.seattletimes.nwsource. ... ug=2107354


No author for this article but there's a few statistical leaders listed for the 1995-96 season taken from Pollack's yearbook. No +/- data but categories such as most dunks, most traveling violations, etc.

Spoiler:
Stat Whiz Shows He Can Stuff Book
Just out is Harvey Pollack's annual NBA statistical yearbook, this time with 140 pages of minutiae.

For instance, Pollack, longtime statistician for the Philadelphia 76ers, charted every basket Shaquille O'Neal made last season. Included are 168 layups, 167 dunks and only six baskets from outside 12 feet.

Among some other 1995-96 statistical leaders:

-- Most dunks: Shawn Kemp, 197.

-- Most times having shot blocked: Cedric Ceballos, 121.

-- Most traveling violations: Kemp, 56.

-- Most fines: Dennis Rodman, $30,000.

-- Most technical-foul fines: Seattle, $46,000.

-- Most offensive fouls: Alonzo Mourning, 44.

-- Most goaltending calls: Dikembe Mutombo, 44.

-- Most opening taps won: Elden Campbell, 56.

-- Worst field-goal percentage (minimum 100 shots): Bobby Hurley, 28.3.

-- Most common surname: Williams, 12; Smith, 8; Johnson, 7.
http://community.seattletimes.nwsource.com/archive/?date=19961213&slug=2364882


George Karl talking about Nate McMillan's plus-minus early in the 1994-95 season. Once again, not sure who was keeping track of the data.

Spoiler:
McMillan a plus

Karl also has focused on McMillan's positive influence when he's on the floor. Karl cited the fact that the Sonic co-captain led the NBA in plus-minus last year and is the team leader in that category. McMillan's plus-minus, which measures points gained or lost when a player is on the court, is over twice as that of the team's No. 2 player this season, according to Karl.

Gill's plus-minus is on the negative side this season.

"I thought it was time to give Nate an opportunity to start," Karl said, "and lead us that way."
http://community.seattletimes.nwsource.com/archive/?date=19941215&slug=1947453


A few other references to +/- data by a couple of Seattle Times writers.

Spoiler:
You don't believe me? Who do you think led the league in plus-minus last season? Hakeem Olajuwon? Scottie Pippen? Shaquille O'Neal?

It was McMillan. The Sonics outscored opponents by 616 points when McMillan was playing.

"I look at Nate as almost like a Lawrence Taylor," Sonic Coach George Karl said after last night's business-like 103-90 win over the Hakeem-less Houston Rockets. "When we have him in the game, we're so confident that the other team isn't going to hurt us. And we're very capable of exploding. Making the turnover. Creating the kind of game we like.

"After looking at film last summer and watching the plus-minus, I told Nate we've got to play him more. I told him, `I'm not playing you enough for a guy who produces winning. And you produce winning.' I think you're going to see him average 25 to 30 minutes, instead of under 25."'
http://community.seattletimes.nwsource.com/archive/?date=19941207&slug=1945930

For years, Harvey Pollak, the former PR director for the Sixers, jammed every nook and cranny of his media guides with arcane and hard-to-find statistical gems. Now his stuff has grown enough to warrant a whole, separate publication.

Pollak is the one who introduced the plus-minus to the NBA, a category Seattle's Nate McMillan won in its debut two years ago. Each of the book's 142 pages is brimming with basketball numbers. You learn that Shawn Kemp led the NBA in dunks, that the Sonics led the NBA in fast-break points and in point differential in the paint.
http://community.seattletimes.nwsource.com/archive/?date=19961222&slug=2366423

McMillan may be the only person to purposely make the cover of an opponent's media guide. The Sonic swingman earned mention on the 76ers' cover as the winner of the NBA's first-ever plus-minus title. The unofficial statistic was kept by longtime Sixer "Superstat" Harvey Pollak. Plus-minus refers to how many points a team gains or loses while a player is on the floor.
http://community.seattletimes.nwsource.com/archive/?date=19950131&slug=2102332
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Re: Raw plus/minus for 93-94 season 

Post#31 » by ceiling raiser » Tue Sep 2, 2014 2:46 am

Double Clutch wrote:Hey fpliii, I found some information that might interest you in regards to the 1995 and 1996 books. Not sure if you can directly contact the author of these articles and in some cases, the articles don't have a listed author for some odd reason but they all refer to those books in one way or the other.

Excerpt below that contains Seattle's +/- data midway into the 1994-95 season (Feb 27, 1995 to be exact). Not sure if this data was collected from Pollack or whether a Seattle Times writer was keeping track of it on his own or perhaps some of the coaching staff/scouts were responsible for it.

Spoiler:
Karl's most valued statistic is "plus-minus," the number of points gained or lost while a player is in a game.

The team's leader is Nate McMillan. With him in the game, the Sonics have profited 413 points. Gary Payton has 318 points, Detlef Schrempf 312, Sam Perkins 279, Vincent Askew 233, Shawn Kemp 180 and Kendall Gill 89.

McMillan tops the category despite bone spurs that have limited his quickness.

http://community.seattletimes.nwsource. ... ug=2107354


No author for this article but there's a few statistical leaders listed for the 1995-96 season taken from Pollack's yearbook. No +/- data but categories such as most dunks, most traveling violations, etc.

Spoiler:
Stat Whiz Shows He Can Stuff Book
Just out is Harvey Pollack's annual NBA statistical yearbook, this time with 140 pages of minutiae.

For instance, Pollack, longtime statistician for the Philadelphia 76ers, charted every basket Shaquille O'Neal made last season. Included are 168 layups, 167 dunks and only six baskets from outside 12 feet.

Among some other 1995-96 statistical leaders:

-- Most dunks: Shawn Kemp, 197.

-- Most times having shot blocked: Cedric Ceballos, 121.

-- Most traveling violations: Kemp, 56.

-- Most fines: Dennis Rodman, $30,000.

-- Most technical-foul fines: Seattle, $46,000.

-- Most offensive fouls: Alonzo Mourning, 44.

-- Most goaltending calls: Dikembe Mutombo, 44.

-- Most opening taps won: Elden Campbell, 56.

-- Worst field-goal percentage (minimum 100 shots): Bobby Hurley, 28.3.

-- Most common surname: Williams, 12; Smith, 8; Johnson, 7.
http://community.seattletimes.nwsource.com/archive/?date=19961213&slug=2364882


George Karl talking about Nate McMillan's plus-minus early in the 1994-95 season. Once again, not sure who was keeping track of the data.

Spoiler:
McMillan a plus

Karl also has focused on McMillan's positive influence when he's on the floor. Karl cited the fact that the Sonic co-captain led the NBA in plus-minus last year and is the team leader in that category. McMillan's plus-minus, which measures points gained or lost when a player is on the court, is over twice as that of the team's No. 2 player this season, according to Karl.

Gill's plus-minus is on the negative side this season.

"I thought it was time to give Nate an opportunity to start," Karl said, "and lead us that way."
http://community.seattletimes.nwsource.com/archive/?date=19941215&slug=1947453


A few other references to +/- data by a couple of Seattle Times writers.

Spoiler:
You don't believe me? Who do you think led the league in plus-minus last season? Hakeem Olajuwon? Scottie Pippen? Shaquille O'Neal?

It was McMillan. The Sonics outscored opponents by 616 points when McMillan was playing.

"I look at Nate as almost like a Lawrence Taylor," Sonic Coach George Karl said after last night's business-like 103-90 win over the Hakeem-less Houston Rockets. "When we have him in the game, we're so confident that the other team isn't going to hurt us. And we're very capable of exploding. Making the turnover. Creating the kind of game we like.

"After looking at film last summer and watching the plus-minus, I told Nate we've got to play him more. I told him, `I'm not playing you enough for a guy who produces winning. And you produce winning.' I think you're going to see him average 25 to 30 minutes, instead of under 25."'
http://community.seattletimes.nwsource.com/archive/?date=19941207&slug=1945930

For years, Harvey Pollak, the former PR director for the Sixers, jammed every nook and cranny of his media guides with arcane and hard-to-find statistical gems. Now his stuff has grown enough to warrant a whole, separate publication.

Pollak is the one who introduced the plus-minus to the NBA, a category Seattle's Nate McMillan won in its debut two years ago. Each of the book's 142 pages is brimming with basketball numbers. You learn that Shawn Kemp led the NBA in dunks, that the Sonics led the NBA in fast-break points and in point differential in the paint.
http://community.seattletimes.nwsource.com/archive/?date=19961222&slug=2366423

McMillan may be the only person to purposely make the cover of an opponent's media guide. The Sonic swingman earned mention on the 76ers' cover as the winner of the NBA's first-ever plus-minus title. The unofficial statistic was kept by longtime Sixer "Superstat" Harvey Pollak. Plus-minus refers to how many points a team gains or loses while a player is on the floor.
http://community.seattletimes.nwsource.com/archive/?date=19950131&slug=2102332

Thanks. Good articles, and it seems the info is definitely in those two editions. If I'm unable to get an answer from APBR or my contact in the Sixers, and can't get ahold of Pollack, I'll look into those authors.
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Re: Raw plus/minus for 93-94 season 

Post#32 » by Dipper 13 » Tue Sep 2, 2014 8:17 am

It appears that Pollack has been keeping track of the Sixers plus/minus data at least through the 1980's, perhaps even the 60's and 70's. After all, Pollack's first ever statistical yearbook is from 1967-68.


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Re: Raw plus/minus for 93-94 season 

Post#33 » by colts18 » Tue Sep 2, 2014 3:31 pm

Anyone check the 84 Sixers yearbook to see if they had plus/minus on the 83 season?
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Re: Raw plus/minus for 93-94 season 

Post#34 » by Dipper 13 » Wed Sep 3, 2014 2:49 am

1991-92 Sixers Plus Minus

http://i.imgur.com/pBOYfM5.jpg


Charles Barkley

+14.4 Net ORtg

+4.1 On Court ORtg (Compared to league average)


Net Overall: http://i.imgur.com/ouQAfzT.png

Offense: http://i.imgur.com/JmFt9Qn.png

Defense: http://i.imgur.com/ic5e9sK.png



Barkley and Hawkins both look dominant offensively in this year's data as well as 1990. Hawk is perhaps the best spot up shooter I have ever seen in the NBA and was very proficient with the 3 point shot.
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Re: Raw plus/minus for 93-94 season 

Post#35 » by ceiling raiser » Thu Sep 4, 2014 6:52 pm

Spoke to Harvey Pollack today, and ordered the 95-96 and 96-97 yearbooks (with data from 94-95 and 95-96). I'll upload the new scans when the books arrive.
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Re: Raw plus/minus for 93-94 season 

Post#36 » by colts18 » Thu Sep 4, 2014 7:01 pm

fpliii wrote:Spoke to Harvey Pollack today, and ordered the 95-96 and 96-97 yearbooks (with data from 94-95 and 95-96). I'll upload the new scans when the books arrive.

Awesome news. How did the chat go?

I wouldn't be surprised if David Robinson beats out Michael Jordan in 96 plus/minus. I'm most excited about the 96 seasons. I want to see how MJ, Pippen, Rodman, DRob, and Shaq do in plus/minus.
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Re: Raw plus/minus for 93-94 season 

Post#37 » by ceiling raiser » Thu Sep 4, 2014 7:13 pm

colts18 wrote:
fpliii wrote:Spoke to Harvey Pollack today, and ordered the 95-96 and 96-97 yearbooks (with data from 94-95 and 95-96). I'll upload the new scans when the books arrive.

Awesome news. How did the chat go?

I wouldn't be surprised if David Robinson beats out Michael Jordan in 96 plus/minus. I'm most excited about the 96 seasons. I want to see how MJ, Pippen, Rodman, DRob, and Shaq do in plus/minus.

Pretty good. Turns out that prior to Kennedy becoming commissioner, a lot of things were informal/disorganized. A few years into his tenure (Pollack said 1968), a couple key changes were made:

• teams held onto box scores for both home and away games (beforehand, the only copy was held by home teams; he noted that teams didn't always hold onto the individual box scores, and it was common to say, only maintain records of each player's totals against certain opponents)
• all teams had to publish media guides

At some point later, but prior to 79-80 (since Pollack decided to keep track of four-point plays starting that year, he noted), teams began to maintain play-by-plays. It seems from speaking with him that not every team did at the time, though by the mid-80s they did (starting with 87-88 at which point he semi-retired as PR director and took on a less demanding position with the organization time-wise, he and his team went through the physical play-by-plays for the dunks numbers, and calculated plus/minus for the Sixers; they also calculated stats for some players like average FG distance, which were great mentions on broadcasts).

The takeaway being that the league play-by-play goes back at least 10 years prior to the first digitalized records, though likely not back to the beginning of the league. I asked him if he still had copies of the old play-by-plays, and he said he's not sure if they're still in storage, but he's not very confident that they're still around (though other teams might have their own; Pollack noted that he had to request play-by-plays for other teams directly from the league office before they were available online). So the data could still be out there somewhere, in some form, from 87-88 through 95-96.
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Re: Raw plus/minus for 93-94 season 

Post#38 » by RebelWithACause » Thu Sep 4, 2014 7:20 pm

fpliii wrote:
colts18 wrote:
fpliii wrote:Spoke to Harvey Pollack today, and ordered the 95-96 and 96-97 yearbooks (with data from 94-95 and 95-96). I'll upload the new scans when the books arrive.

Awesome news. How did the chat go?

I wouldn't be surprised if David Robinson beats out Michael Jordan in 96 plus/minus. I'm most excited about the 96 seasons. I want to see how MJ, Pippen, Rodman, DRob, and Shaq do in plus/minus.

Pretty good. Turns out that prior to Kennedy becoming commissioner, a lot of things were informal disorganized. A few years into his tenure (Pollack said 1968), a couple key changes were made:

• teams held onto box scores for both home and away games (beforehand, the only copy was held by home teams; he noted that teams didn't always hold onto the individual box scores, and it was common to say, only maintain records of each player's totals against certain opponents)
• all teams had to publish media guides

At some point later, but prior to 79-80 (since Pollack decided to keep track of four-point plays starting that year, he noted), teams began to maintain play-by-plays. It seems from speaking with him that not every team did at the time, though by the mid-80s they did (starting with 87-88 at which point he semi-retired as PR director and took on a less demanding position with the organization time-wise, he and his team went through the physical play-by-plays for the dunks numbers, and calculated plus/minus for the Sixers; they also calculated stats for some players like average FG distance, which were great mentions on broadcasts).

The takeaway being that the league play-by-play goes back at least 10 years prior to the first digitalized records, though likely not back to the beginning of the league. I asked him if he still had copies of the old play-by-plays, and he said he's not sure if they're still in storage, but he's not very confident that they're still around (though other teams might have their own; Pollack noted that he had to request play-by-plays for other teams directly from the league office before they were available online). So the data could still be out there somewhere, in some form, from 87-88 through 95-96.


Amazing fpliii!

Really hope we can get that data from somewhere to calculate the RAPM of the 80s and 90s.

Who do you plan to contact now?
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Re: Raw plus/minus for 93-94 season 

Post#39 » by colts18 » Thu Sep 4, 2014 7:23 pm

fpliii wrote:Pretty good. Turns out that prior to Kennedy becoming commissioner, a lot of things were informal disorganized. A few years into his tenure (Pollack said 1968), a couple key changes were made:

• teams held onto box scores for both home and away games (beforehand, the only copy was held by home teams; he noted that teams didn't always hold onto the individual box scores, and it was common to say, only maintain records of each player's totals against certain opponents)
• all teams had to publish media guides

At some point later, but prior to 79-80 (since Pollack decided to keep track of four-point plays starting that year, he noted), teams began to maintain play-by-plays. It seems from speaking with him that not every team did at the time, though by the mid-80s they did (starting with 87-88 at which point he semi-retired as PR director and took on a less demanding position with the organization time-wise, he and his team went through the physical play-by-plays for the dunks numbers, and calculated plus/minus for the Sixers; they also calculated stats for some players like average FG distance, which were great mentions on broadcasts).

The takeaway being that the league play-by-play goes back at least 10 years prior to the first digitalized records, though likely not back to the beginning of the league. I asked him if he still had copies of the old play-by-plays, and he said he's not sure if they're still in storage, but he's not very confident that they're still around (though other teams might have their own; Pollack noted that he had to request play-by-plays for other teams directly from the league office before they were available online). So the data could still be out there somewhere, in some form, from 87-88 through 95-96.


How long did he keep track of 76ers plus minus data?
ceiling raiser
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Re: Raw plus/minus for 93-94 season 

Post#40 » by ceiling raiser » Thu Sep 4, 2014 7:27 pm

RebelWithACause wrote:
fpliii wrote:
colts18 wrote:Awesome news. How did the chat go?

I wouldn't be surprised if David Robinson beats out Michael Jordan in 96 plus/minus. I'm most excited about the 96 seasons. I want to see how MJ, Pippen, Rodman, DRob, and Shaq do in plus/minus.

Pretty good. Turns out that prior to Kennedy becoming commissioner, a lot of things were informal disorganized. A few years into his tenure (Pollack said 1968), a couple key changes were made:

• teams held onto box scores for both home and away games (beforehand, the only copy was held by home teams; he noted that teams didn't always hold onto the individual box scores, and it was common to say, only maintain records of each player's totals against certain opponents)
• all teams had to publish media guides

At some point later, but prior to 79-80 (since Pollack decided to keep track of four-point plays starting that year, he noted), teams began to maintain play-by-plays. It seems from speaking with him that not every team did at the time, though by the mid-80s they did (starting with 87-88 at which point he semi-retired as PR director and took on a less demanding position with the organization time-wise, he and his team went through the physical play-by-plays for the dunks numbers, and calculated plus/minus for the Sixers; they also calculated stats for some players like average FG distance, which were great mentions on broadcasts).

The takeaway being that the league play-by-play goes back at least 10 years prior to the first digitalized records, though likely not back to the beginning of the league. I asked him if he still had copies of the old play-by-plays, and he said he's not sure if they're still in storage, but he's not very confident that they're still around (though other teams might have their own; Pollack noted that he had to request play-by-plays for other teams directly from the league office before they were available online). So the data could still be out there somewhere, in some form, from 87-88 through 95-96.


Amazing fpliii!

Really hope we can get that data from somewhere to calculate the RAPM of the 80s and 90s.

Who do you plan to contact now?

I'm not sure. I'm going to wait for the guidebooks for 94-95 and 95-96 to arrive first, and work from there.

If the league still has those 10 years of play-by-play data (or more), it's likely not digitalized yet. Pollack doesn't know if the Sixers still have the play-by-plays, though he said he'll check, and asked me to call him when the books arrive. I'll ask him again then if he was able to find them. From what he's saying though, each year's play-by-play was stored in a box of 5000 or 6000 pages (hard copies, so Philly's copies aren't digitalized. The NBA likely still has copies, but since Pollack got his play-by-plays from the league office, I'd suspect they're in the same form.

Anyhow though, if Pollack isn't able to locate them, I guess I'd try and contact the NBA directly, but I'm not extremely optimistic. The recently released data from 96-97 through 99-00 was already available on media.nba.com before they put in on stats.nba.com, so I think that's the first year it was digitalized. The bright side though, is that the play-by-play does exist (or did exist, at least), going 10 more years back according to Pollack, so there is some hope. :wink:
Now that's the difference between first and last place.

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