What It Is
qSI measures the impact a player has on their own shooting — specifically, how much better or worse they shoot relative to expected output given the shot locations and defensive contexts they face. A high positive qSI means the player converts shots at a higher rate than expected given the quality of shots they take.
APEX Rationale
Not used in APEX. qSI is a tracking-based metric unavailable for historical seasons and behind paid API access. The concept is partially captured through TS+ (True Shooting adjusted for shot difficulty), which APEX does use in the Scoring pillar.
Related Metrics
TS+
qSQ