Glossary

Published 10/21/2015 by Vantage Sports

Due to the depth of the Vantage data set, which captures more than 16,000 relevant data points in each game, new stats are created all the time. But the following are the most common terms and concepts that are used in Vantage Stats.

Altered Shot: Shot defender is within 3 feet and his hand is up. Offensive player must change shooting angle or release point while in the air.

Assist+: Assists, passes to missed open shots, passes to shooting fouls, and crucial passes.

Beat-Back-on-D Rate: Number of times player is beaten by his opponent to the opponent's three-point line in defensive transition per 100 chances.

Block-to-Possession Rate: Percentage of player’s blocks where player’s team gains possession.

Blockout: Player blocks (or boxes) out an opposing player. This requires contact.

Chance: The uninterrupted possession of the ball. A chance is a subset of a box-score “possession” because an offensive rebound, defensive block to shooting team’s possession, or defensive deflection out of bounds create a new chance but not a new possession. The reason that we use chances instead of possessions for our stats is that per-possession stats will always be skewed by how good a team is at offensive rebounding (i.e., getting “second chances”). Because we want to isolate parts of the game apart from overall offensive efficiency, per-chance stats provide less noise than per-possession stats.

Contest+: Shot defense that is contested, altered, or blocked.

Contest+ FG%: Shooter’s FG% on shots attempted against Contest+ defense.

Contest+ Rate: Percentage of shots defended where defender’s shot defense is Contest+.

Contested Shot: Shot defender is within 3 feet and has a hand up.

Closeout Opportunity: Offensive player is on perimeter while player is in or close to the paint when pass is made to offensive player.

Crucial/Indirect Pass: Player makes a pass leading directly to an assist, a pass to shooting foul, or a pass to an open or guarded shot for passer’s team (i.e., the final passer did not do anything unexpected prior to delivering the final pass). Strict limit of 1 dribble for final passer. Commonly referred to as the “hockey assist.”

Cut Efficiency: Percentage of cuts or flashes where player is open to receive the ball. Ball-handler must be looking to pass for the cut or flash to be counted.

Defensive Activity Rate: Number of significant actions (both effective and ineffective) per defensive chance.

Deflected-Pass Rate: Number of deflected passes per 100 pass attempts.

DReb+: Rebounds, tips to team possession, and fouls drawn during defensive rebound opportunity.

Dribble Factor: The positive or negative effect on shooter’s FG% in percentage points when shooter dribbles.

Effective Double-Team Rate: Percentage of double-teams that lead directly to a Contest+, tie-up, deflection, offensive foul, denied pass, or turnover.

Effective Help Rate: Percentage of help attempts that lead directly to a Contest+, tie-up, deflection, offensive foul, denied pass, or turnover.

Effective Screen Defense Rate: Percentage of screens defended where no score, Assist+ or missed Open+ shot.

Guarded Shot: Shot defender is within 5 feet but not 3 feet of the shooter.

Indirect Pass Rate: Percentage of Assist+ as a result of crucial passes.

Keep-in-Front: Offensive player attempts to drive to the hoop but player keeps the offensive player in front of him.

Keep-in-Front%: Percentage of drive attempts that defender receives a Keep-in-Front.

Missed Blockout: Opposing player moves over or around player and possesses ball or tips ball to another opposing player.

Offensive Activity Rate: Number of significant actions (both effective and ineffective) per offensive chance.

Open Shot: Shot defender is not within 5 feet of the shooter.

Open+: Shot defense that is pressured, guarded, or open.

Open+ FG%: Shooter’s FG% on shots attempted against Open+ defense.

Open+ Frequency (or Freq.): Percentage of shots attempted against Open+ defense.

Opponent Inside Shot%: Percentage of inside shots (in the low post or under the rim) attempted by the other team while the subject player is in the game.

Opportunity (Rebounds): Player is in the key when shot is released or has moved into key area when shot is rebounded.

OReb+: Rebounds, tips to team possession, and fouls drawn during offensive rebound opportunity.

Points per Shot: Points per shot attempt, including fouled misses and made free throws. Note that the box-score FGA does not include fouled misses.

Pressure Rate: Number of pressures applied per 100 defensive chances. Pressures include situations where the defender is using his body, arms, and hands actively to defend on the perimeter, inbounds passes, and outlet passes.

Pressured Shot: Shot defender is within 3 feet of the shooter but does not have a hand up.

Pursuit Rate: Percentage of chances ending in a missed shot in which player moves from one location to another location toward the rebound between the time of the shooting motion and the rebound.

Received Screen Outcome Efficiency: Percentage of received screens that result in player being open, score, open shot, shooting foul, or Assist+.

Roll%: Percentage of screens that screen setter rolls after setting the screen.

Set Screen Outcome Efficiency: Percentage of set screens that result in teammate score, open shot, shooting foul, or Assist+.

Set Screen Points per Chance: Number of points per offensive chance for teammate using player’s set screens.

Solid Screen%: Percentage of set screens where screen setter makes contact with or reroutes defender.

Split%: Percentage of on-ball screens received where player splits defenders.

True Facilitation: Passes to open or guarded shot attempts per 100 offensive chances while player is on court.

Unforced TO%: Percentage of turnovers not forced by defender pressure.