Squash Match Point Probability Calculator
Turn a rally win rate and the current score into your chance of winning the game and the match under PAR-11 scoring
Squash Match Point Probability Calculator
Turn a rally win rate and the current score into your chance of winning the game and the match under PAR-11 scoring
How Is a Squash Win Probability Calculated?
Given the probability that you win any single rally against this opponent, the chance of winning a game and a match can be calculated exactly. This tool applies the PAR-11 rules (first to 11, win by two) and the best-of-3 or best-of-5 match format to your current game score and games won.
The model assumes you win each rally with the same probability. It is a planning and analysis aid: enter your rally win rate, for example from your last matches, and see how a small advantage in rally win rate compounds into a larger advantage in games and matches.
How to Use This Calculator
Why Small Rally Edges Become Big Match Edges
A player who wins 55% of the rallies does not win 55% of the games: the win-by-two structure and the number of rallies per game amplify the edge, so a modest rally advantage can turn into a game win probability of about 70% or more.
Seeing this helps with decisions about risk: if a tactic costs you a few percentage points of rally win rate but gains something else, the compounding effect shows how large the real cost is over a game or a match.
?Frequently Asked Questions
It is the share of rallies you win against this opponent. You can estimate it from the points won in recent matches against the same opponent or a similar one, for example by dividing your total points by total points played.
A game contains 20 or more rallies, and the first to 11 with a two-point lead requires a sustained edge. Small per-rally advantages repeat many times, so the probability of winning the game is noticeably larger than the per-rally probability. The same effect repeats across games in a match.
Once both players have reached 10 points, the game depends only on who is ahead and the rally win probability. From a tie, the first player to be two points ahead wins; the tool uses the exact closed-form result rather than a long simulation.
In point-a-rally squash the server usually has a small advantage because the receiver must return the serve, but the effect is small and varies by player. The model uses one constant rally win probability and does not separate serve and return.
It is an estimate based on the single number you enter. Fatigue, tactics, form and psychological factors can all move the real rally win rate during a match, so treat the output as an illustration, not a forecast.
No. The model is for point-a-rally scoring to 11. Games played to 9 with hand-in/hand-out scoring have different mathematics.