Plus-minus through games of 1-18-11

Updated plus-minus stats are available here (also available in csv format) .

NCAA plus-minus stats through 12/22/10

Unfortunately, the NCAA stats page where I get all my game data has been unavailable since yesterday evening, so today's plus-minus data is not as current as I would prefer. The top ten is below, or you can take a gander at the full plus-minus spreadsheet.

Top 10 Plus-Minus Players
Through Games of 12/22/10

Player	Team	PPP	+/-	TeamPPP	DefPPP	DRB%	ORB%	Position
SINGLER,KYLE	Duke	0.288	248	1.213	0.768	0.110	0.080	F
SMITH,NOLAN	Duke	0.295	233	1.227	0.813	0.124	0.031	G
CHRISTOPHERSON,SCOTT	Iowa St.	0.261	231	1.138	0.833	0.088	0.015	G
GARRETT,DIANTE	Iowa St.	0.296	227	1.162	0.857	0.108	0.011	G
JOHNSON,JAJUAN	Purdue	0.354	218	1.130	0.797	0.204	0.086	F
FREDETTE,JIMMER	BYU	0.408	206	1.162	0.864	0.071	0.023	G
DIEBLER,JON	Ohio St.	0.246	206	1.253	0.823	0.073	0.014	G
VANDERBEKEN,JAMIE	Iowa St.	0.222	202	1.167	0.817	0.153	0.062	F
GIBBS,ASHTON	Pittsburgh	0.335	200	1.236	0.922	0.076	0.014	G
MOORE,E'TWAUN	Purdue	0.358	198	1.118	0.799	0.138	0.074	G

NCAA plus-minus updates through 12/4/10

Hot on the heels of the last update, the latest plus-minus data current through the games of 12/4/10 is ready for your perusal.

Though I'm a huge fan of Google Docs, I'm looking for an alternative method for posting and sharing spreadsheets because Google Docs does not allow non-editor viewers to sort or filter spreadsheet contents, which is where all the fun really is. Until I find a solution, you can always save the spreadsheet to your desktop and manipulate it there.

Top 10 Plus-Minus Players

Player	Team	eFG%	PPP	+/-	TeamPPP	DefPPP	DRB%	ORB%	Position
SINGLER,KYLE	Duke	0.53	0.27	178	1.204	0.813	0.106	0.080	F
SMITH,NOLAN	Duke	0.58	0.31	170	1.220	0.851	0.118	0.030	G
MCCAMEY,DEMETRI	Illinois	0.61	0.28	163	1.214	0.870	0.107	0.018	G
HANSBROUGH,BEN	Notre Dame	0.66	0.29	154	1.291	0.917	0.090	0.040	G
FREDETTE,JIMMER	BYU	0.55	0.39	148	1.170	0.834	0.071	0.021	G
MORRIS,MARCUS	Kansas	0.69	0.42	148	1.330	0.777	0.176	0.125	F
EMERY,JACKSON	BYU	0.57	0.24	143	1.191	0.834	0.113	0.018	G
JOHNSON,JAJUAN	Purdue	0.49	0.32	141	1.127	0.808	0.195	0.098	F
ABROMAITIS,TIM	Notre Dame	0.46	0.28	141	1.215	0.876	0.179	0.043	F
ATKINS,ERIC	Notre Dame	0.55	0.15	141	1.288	0.862	0.085	0.018	G

Updated plus-minus through 12/1/10

I've updated the NCAA plus-minus stats for the current season through the games of 12/1/10. The format has changed slightly this time around to include Points Per Possession (PPP), and I've replaced offensive efficiency and defensive efficiency with Team Points Per Possession and Defensive Points Per Possession, respectively. Functionally, the statistics are the same thing, as you can simply multiply TeamPPP or DefPPP by 100 to get offensive efficiency or defensive efficiency. The change, I believe, adopts nomenclature that is more intuitive and better reflects the underlying statistics. The full spreadsheet is here.

2009-2010 Plus-Minus

Though plus-minus has been an officially tracked statistic in the NHL since 1968, it remains a relative newcomer to the NBA, and is virtually nonexistent in college basketball. The plus-minus statistic, for those who are not already familiar with it, is designed to measure the scoring impact a player has on his team, even if that player is not the one doing the scoring. A player's plus-minus is calculated by adding the points his team scores while he is active on the court and subtracting the points the opposition scores while he is active on the court. In this manner, a player's plus-minus can reveal his contributions to team success that otherwise go unmeasured by standard statistics.

Using the play-by-play data provided by the NCAA for the 2009-2010 season, I've calculated the plus-minus for nearly every player that averaged more than four minutes per game. Each player's plus minus is his aggregate number for the entire season.

I've also calculated the offensive efficiency and defensive efficiency with respect to each player's active court time. Offensive efficiency measures the number of points a player's team scores per 100 possessions while that player is on the floor. Defensive efficiency measures the same for the opposition.