Game Analysis Score Calculator

This calculator turns a standard water polo box score into a single composite performance rating, using a weighted points system rather than any single raw stat. Positive contributions are weighted by value: goals count 3 points, assists and steals 2 points each, exclusions drawn (kickout fouls won, earning a 6-on-5 power play) and blocks/saves 1.5 points each — reflecting that a goal is worth more than a steal, but all offensive and defensive playmaking counts. Negative contributions are turnovers at 2 points and exclusions committed (fouls that put your own team down a player) at 2.5 points, since giving your opponent a power play is treated as slightly costlier than a simple turnover.

The headline Player Efficiency Rating takes positive score minus 80% of negative score, multiplies by 4, and clamps the result to a 0–100 scale, so it isn't a raw plus/minus but a compressed index calibrated so 60+ reads as excellent and 80+ as MVP-caliber. Shooting percentage is simply goals divided by shots, and turnover ratio measures turnovers against total offensive touches (shots, assists, turnovers, and exclusions drawn combined) to flag ball-security issues independent of scoring volume. Because the weights and scaling factor are fixed heuristics rather than derived from league-wide statistical regression, this rating is best used to compare performances within the same dataset or track one player's trend over a season — not as an authoritative, cross-league PER equivalent.