Player Tracking Data

NBA runs its stats with SAP
Defensive Impact: Statistics measuring the impact a player has on defense, including blocks, steals and protecting the rim, which measures the opponent's field goal percentage at the rim while it is being defended. Rim protection is defined as the defender being within five feet of the basket and within five feet of the offensive player attempting the shot.
    Player tracking stats are not available before the 2013-14 season.