An unforced error is a mistake a player makes without being put under significant pressure by the opponent — missing a routine shot, hitting into the net or out when well-positioned and not rushed. It contrasts with a forced error (caused by the opponent’s good play) and a winner (a shot the opponent cannot reach). The ratio of winners to unforced errors is a key measure of a player’s consistency and decision-making in tennis, badminton, table tennis and squash. Reducing unforced errors — playing higher-percentage shots and staying patient — is often a faster route to winning than hitting more winners.
Key points
- Mistake made under no real pressure
- Contrasts with forced error and winner
- Winner-to-error ratio measures consistency
- Reducing errors often beats hitting winners