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Plus Minus Boxscore

TallmanNYC
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Plus Minus Boxscore

Funny example of how +/- on court can result in some screwy numbers in an individual game. In the Spurs/Rockets overtime game, Parsons (who played 41 minutes) was somehow -27 during those minutes. And he didn't have a terrible game scoring 20 points on 18 shots. Lin went off for 38, but I assume you already heard all about that.

Below is the boxscore that I copied into this post. I've got a feeling it won't come out well.

Rockets
STARTERS MIN FG-A 3P-A FT-A REB (O/D) AST ST BLK TO PF +/- PTS
Parsons F 41 7-18 4-8 2-5 7 (2/5) 4 1 0 2 2 -27 20
Patterson FC 21 4-10 0-2 0-0 2 (1/1) 1 1 0 1 0 -9 8
Asik C 35 5-11 0-0 11-14 10 (4/6) 2 1 2 2 4 +3 21
Lin PG 42 11-21 4-5 12-12 3 (1/2) 7 2 2 2 2 -4 38
Delfino GF 38 2-12 1-5 0-1 4 (0/4) 5 3 1 3 0 +2 5
RESERVES MIN FG-A 3P-A FT-A REB (O/D) AST ST BLK TO PF +/- PTS
Douglas G 41 6-11 5-7 0-0 2 (0/2) 4 1 0 2 3 -1 17
Morris PF 25 4-6 2-3 3-4 6 (1/5) 0 3 0 2 4 +6 13
Smith C 16 2-6 0-0 0-0 6 (2/4) 0 0 3 0 4 -6 4
Cook SG 4 0-2 0-0 0-0 0 (0/0) 1 0 0 0 1 +1 0
Aldrich C 2 0-0 0-0 0-0 0 (0/0) 0 0 0 0 1 -5 0

Read More: http://sportsillustrated.cnn.com/basketball/nba/gameflash/2012/12/10/322...


TaylorCondrin
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For anyone who is unsure what

For anyone who is unsure what the +/- is, it indicates the scoring differential between the 2 teams when the player is on the court.

Siggy
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+/- for a single game is

+/- for a single game is pretty worthless.

XYRYX
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I ihink you're completely

I ihink you're completely right but does a stat make more sense over the course of more games when it doesn't make sense for a single game?

I always have problems with this stat line. As a Thunder fan I know that Nick Collison always is top in the league in +/- but this doesn't mean the Thunder will be any better with him in the starting lineup even if I hink he would be as valuable as perk there with more rebounds.

I just don't think +/- is a great stat to measure players. Maybe you can say the bench is better than the other bench but I even know this when I just look at the score.

Siggy
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I don't think it's a great

I don't think it's a great measure at all just by itself, but if a player is used in different situations with different personnel you can get an idea of how they impact other players or the team as a whole over a larger sample of games. Like if the player runs with both the 1st and 2nd units, you can see if they have a positive/negative impact on other players (by looking at the other teammates' +/- when on the floor with a particular player) or if they can be as effective in different roles (+/- with different units). There are much better metrics to measure player impact than the simple +/- though.

Hitster
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It can help to judge who is

It can help to judge who is effective put players on successful teams will always be higher due to this fact so it does skew things a bit. Sometimes when a team wins a game and the starters are all minus it looks amusing and you can see how a bench has won the game.

TallmanNYC
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Yeah and the thing that I

Yeah and the thing that I thought was funny is that how could Parson be -27 in a game that was so close that it went to overtime and that played a huge amount of the minutes.

But yes, individual player plus minus over one game is worthless. The stat is impacted by the other 9 guys on the court. Your opponent misses a FT, that helps your plus minus. Someone on your team hits a desperation three with the shot clock winding down, you get +3 even if you had very little to do with it.

Pureshooter
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I think it's a worthless

I think it's a worthless stat. For instance, if the normal substitution routine is to take out two all-star starters and bring in a sixth man of the year and a scrub, the sixth man of the year might have a negative +/- over an entire season because of the liability of the other bench player.

Siggy
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Not true since good 6th men

Not true since good 6th men spend a lot of time with the first unit and they close games as well. Plus they would also be going against a lot of bench players.

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