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Corsi (SAT) Calculator (Hockey)

LAST UPDATE: February 23rd, 2020

Corsi Calculator

What is Corsi (SAT)?

Corsi is the total number of shot attempts (shots, missed shots, and blocked shots). It is also known as “SAT” or “Shot Attempts.”

“Corsi” has 3 main statistics:

  • “Corsi” (Corsi +/-, C+/- or SAT+/-): The total number of offensive shot attempts minus the total number of defensive shot attempts.
  • “Corsi For %” (CF% or SAT For %): The percentage of all the total shot attempts produced team and their opponents. A CF% of more than 50% means that the team produced more shot attempts than their opponent.
  • “Relative Corsi” (CF% Rel or SAT% Rel): Shows the relative effect of a player on the ice. A positive CF% Rel means that when the player is on the ice, the team’s CF% is higher than when the player is not on the ice.

Corsi is similar to Fenwick (USAT). The difference is that Fenwick does not include blocked shots in its calculation.

Formula – How to calculate Corsi

  • CF (SAT For) = Shots on Target For + Missed Shots For + Blocked Shots For
  • CA (SAT Against) = Shots on Target Against + Missed Shots Against + Blocked Shots Against
  • Corsi (also known as C+/- or SAT +/-) = CF – CA
  • CF% (SAT For %) = CF ÷ (CF + CA) x 100%
  • CF% Rel. = CF% with the player on the ice – CF% with the player off the ice
  • All stats are taken from even strength, 5 on 5 play.
  • “Shot” – An action that moves the puck towards the net that is either stopped by the goalie or is a goal.
  • “Blocked shot” – An action that moves the puck towards the net that is blocked by a non-goalie player.
  • “Missed shot” – An action that moves the puck towards the net that misses the net or hits the goalpost.
  • “For” – An offensive action.
  • “Against” – A defensive action.

Example

A team and player have the following stats:

  • For – entire team (5 on 5 play) – Shots: 1,091 – Missed Shots: 417 – Blocked Shots: 182
  • Against – entire team (5 on 5 play) – Shots: 918 – Missed Shots: 422 – Blocked Shots: 111
  • For – Team when player on ice (5 on 5 play) – Shots: 143 – Missed Shots: 53 – Blocked Shots: 22
  • Against – Team when player on ice (5 on 5 play) – Shots: 122 – Missed Shots: 42 – Blocked Shots: 15

… then the statistics when the player is off ice would be:

  • For – player off ice (5 on 5 play) – Shots: 948 – Missed Shots: 364 – Blocked Shots: 160
  • Against – player off ice (5 on 5 play) – Shots: 796 – Missed Shots: 380 – Blocked Shots: 96

… and the Corsi numbers would be:

  • Team Corsi For (CF or SAT For) = 1,091 + 417 + 182 = 1,690
  • Team Corsi Against (CA or SAT Against) =918 + 422 + 111 = 1,451
  • Team Corsi (C+/- or Sat +/-) = 239
  • Team Corsi For Percentage (CF% or SAT for %) = 1,690 / (1,690 + 1,451) = 1,690 / 3,141 = 0.5380, or 53.80%
  • Player Off Ice Corsi For (CF or SAT For) =948 + 364 + 160 = 1,472
  • Player Off Ice Corsi Against (CA or SAT Against) = 796 + 380 + 96 = 1,272
  • Player Off Ice Corsi (C+/- or Sat +/-) = 200
  • Player Off Ice Corsi For Percentage (CF% or SAT for %) = 1,472 / (1,472 + 1,272) = 1,472 / 2,744 = 0.5364, or 53.64%
  • Player On Ice Corsi For (CF or SAT For) =143 + 53 + 22 = 218
  • Player On Ice Corsi Against (CA or SAT Against) = 122 + 42 + 15 = 179
  • Player On Ice Corsi (C+/- or Sat +/-) = 39
  • Player On Ice Corsi For Percentage (CF% or SAT for %) = 218 / (218 + 179) = 218 / 397 = 0.5491, or 54.91%
  • Player Relative Corsi For = 54.91% – 53.64% = 1.27%

Sources and more resources