Corsi Calculator

Corsi, also known as SAT (Shot Attempts), is an advanced hockey statistic that measures all shot attempts — shots on goal, missed shots, and blocked shots — for and against a team or player. It was created by Jim Corsi, a former NHL goalie coach, to better quantify puck possession and offensive zone pressure beyond traditional shots-on-goal metrics.

Corsi For (CF) = Shots on Goal For + Missed Shots For + Blocked Shots For. Corsi Against (CA) = Shots on Goal Against + Missed Shots Against + Blocked Shots Against. Corsi +/- = CF − CA. CF% = CF ÷ (CF + CA) × 100. A CF% above 50% indicates the team is generating more shot attempts than it allows.

CF% (Corsi For Percentage) represents the share of all shot attempts that belong to your team. A CF% above 50% means your team is controlling the puck and generating more shot attempts than the opposition. Elite teams and players typically sustain CF% values of 52–55% or higher over a full season.

Both are shot-attempt metrics, but Fenwick excludes blocked shots from the calculation, counting only shots on goal and missed shots. Corsi includes all three categories: shots on goal, missed shots, and blocked shots. Corsi gives a broader view of total shot attempt volume, while Fenwick focuses on unblocked attempts that reached the net area.

Corsi is most meaningful and commonly reported at even strength (5-on-5), because power plays and penalty kills heavily distort shot attempt totals. Even-strength Corsi isolates true puck-possession ability by removing the influence of special teams situations.

Yes. Individual Corsi tracks a player's shot attempts for and against while they are on the ice. A player with a high CF% at even strength is generally considered a strong possession driver who helps their team control the puck. Coaches and analysts use it alongside other metrics to assess defensive and offensive contributions.

Goals are subject to high variance — goaltending, shooting percentage, and luck can all skew goal totals over a short sample. Corsi captures a much larger sample of events per game, making it a more stable and predictive indicator of a team's true puck-possession quality and future performance over a full season.

Corsi does not account for shot quality, score effects (teams trailing tend to shoot more), zone starts, or quality of competition. A team may post a high CF% by taking many low-danger shots from the perimeter. For a complete picture, analysts combine Corsi with expected goals (xG), scoring chances, and other contextual metrics.