Roanoke College
Stat Crew
Faculty Sponsors
Roland Minton minton@roanoke.edu
Adam Childers childers@roanoke.edu
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This is a glossary explaining terms used in the archive of Stat Crew data for the 2019-20 Roanoke College men's basketball season. Please send corrections or comments to improve the site to
minton@roanoke.edu.
Information for player stats and lineup stats comes from the official play-by-play for each game, cleaned up to remove as many errors as possible.
+/-, Poss, Off +/-, Def +/-
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For a given player/lineup, +/- is the difference between RC points scored and RC points allowed during the time that the player/lineup is on the floor.
"Poss" is the number of possessions that the player/lineup is on the floor for. An offensive rebound counts as continuing the original possession, not
starting a new possession. "Off +/-" tries to isolate an individual player's contribution to RC scoring. If, for example, a lineup consists of players
A, B, C, D, E with Off +/- ratings of +.1, +.2, +.1, +.1, and -.4, that lineup would be expected to score .1+.2+.1+.1-.4 = .1 points per possession above
average (the RC average for that game). In terms of pure +/-, player E would look good since the group is better than average, but the lineup would have
been better with another player in place of E. The math finds the ratings for the players that come closest to matching the actual results for that game.
Positive is above average, the more positive the better. "Def +/-" is the same idea except that the ratings predict the points per possession that the
oponents score. The numbers are computed such that positive is above average (opponents scoring less) and negative is bad.
Off PPP, Def PPP, FG%, Reb%, TO%
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"Off PPP" equals points per possession scored by Roanoke during the time that the player/lineup is on the court. "Def PPP" equals points per possession allowed
during the time that the player/lineup is on the court. FG% is the field goal percentage for each team during the time that the player/lineup is on the court.
Reb% is the defensive rebounding percentage (defensive rebounds divided by opponent misses) for each team while the player/lineup is on the court.
Pure rebounding numbers can be misleading if one team misses a lot of shots. TO% equals
turnovers divided by possessions for each team while the player/lineup is on the court; smaller is better.
"True Shooting Percentage" measures points per shot with free throws factored in. For example, suppose a player/lineup makes 4 of 8 field goals, 2 of which are 3's
and 4 of 4 free throws.
With two 3's, the team made 10 points, equivalent to 5 2-point field goals, on 8 shots. The free throws are the equivalent of making 2 out of 2 field goals.
The true percentage is 7 out of 10, or 70%.
This matches up much better with points per possession than regular field goal percentage does.
Red numbers are significantly better than the team average for that game, blue numbers are significantly worse than the team average,
and black numbers are close to the team average for that game.
2P% and 3P% equal percentage of 2-point shots made and 3-point shots made, respectively, while the lineup is on the court.
Trying to make the numbers friendlier. For a given player and stat, red (maroon or hot) means significantly better than the team average
for that game, while blue (cold) means worse than average. Black numbers are close to the team average for that game.
For a given player/lineup, a bunch of red numbers is good.
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