Value Over Replacement Player (VORP) takes Box Plus/Minus and adjusts it to measure a players value relative to a replacement player. The end statistic is the number of points the player is producing over a replacement player, per 100 TEAM possessions.

Measures a players per-minute productivity by taking into account offensive and defensive contributions, and then adjusting for pace and playing time. Basically, PER is a single number that is supposed to encompass a players total value.

BOX PLUS/MINUS Not to be confused with basic plus/minus. Here’s the creator explaining it: "Box Plus/Minus (BPM) is a box score-based metric for evaluating basketball players' quality and contribution to the team. Set at a baseline of 0.0, you can see how many points, better or worse than average, a player is per 100 possessions."

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REAL PLUS/MINUS Similar to basic plus-minus in theory, but better because it attempts to isolate the effect of each player regardless of who else is on the court while they are playing. From ESPN: "this metric isolates the unique plus-minus impact of each NBA player by adjusting for the effects of each teammate and opposing player. The RPM model sifts through more than 230,000 possessions each NBA season to tease apart the "real" plus-minus effects attributable to each player."

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