What winning percentage measures
Winning percentage is the share of games a team or player has won. It is the standard way to rank teams in leagues where clubs have not all played the same number of games, as in the NBA, NFL, MLB and NHL standings, college sports or a tennis player’s season record.
The formulas
- Winning percentage = wins ÷ games played
- With ties counted as half a win: (wins + 0.5 × ties) ÷ (wins + losses + ties)
- Ties not counted: wins ÷ (wins + losses)
- Wins needed to reach a target T = T × (games played + games left) − current wins, rounded up
US standings show the result as a three-decimal number, such as .700, and say “seven hundred”. It is the same as 70%.
Worked example
A team is 7–3 with 7 games left and wants to finish at 60% or better.
- Winning percentage: 7 ÷ 10 = .700.
- Season total: 17 games, so 60% means 0.6 × 17 = 10.2 wins.
- Wins needed: 10.2 − 7 = 3.2, rounded up to 4 of the 7 remaining games.
- Winning out would give 14–3, or .824; losing out would leave .412.
How leagues handle ties
| League | Ties | Example: 10–6–1 |
|---|---|---|
| NFL | Half a win, half a loss | 10.5 ÷ 17 = .618 |
| High school and many college leagues | Often half a win | .618 |
| Leagues that ignore ties | Not counted | 10 ÷ 16 = .625 |
| Records where a tie is a failure | Counted as a loss | 10 ÷ 17 = .588 |
NHL standings rank teams by points (2 for a win, 1 for an overtime or shootout loss); points percentage is used when teams have played different numbers of games.
Useful benchmarks
- .500 is the line between a winning and a losing record.
- In MLB, a .600 team wins about 97 of 162 games, usually enough for the playoffs.
- In the NFL, 10 wins out of 17 (.588) is often a playoff-level record.
- An NBA team at .700 wins about 57 of 82 games, typically a top seed.
Games behind
Standings also list games behind (GB): ((leader’s wins − team’s wins) + (team’s losses − leader’s losses)) ÷ 2. A team 2 games behind needs to win two more than the leader, or the leader to lose two, to draw level.
Caveats
Winning percentage ignores how games were won. Point differential and strength of schedule often predict future results better than a record built on narrow wins against weak opponents.