Corsi% (CF%) measures shot attempt share — every shot attempt (on goal, missed, blocked) while a player is on ice at even strength. Teams and players above 50% are generating more offensive zone time and shots than they concede. Named after former NHL goaltending coach Jim Corsi, it was popularised by hockey analytics bloggers in the late 2000s. 52%+ is strong; 55%+ is dominant. Corsi strongly predicts future performance and identifies players whose raw point totals understate or overstate their contribution.
Key points
- All shot attempts (on goal + missed + blocked)
- Above 50% = possession dominance
- 52%+ strong; 55%+ dominant
- Better predictor than +/- for player quality