# Winning percentage

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"Win-loss record" redirects here. For the baseball statistic, see Win–loss record (pitching).

In sports, a winning percentage is the fraction of games or matches a team or individual has won. It is defined as wins divided by the total number of matches played (i.e. wins plus losses). A draw counts as a ½ loss and a ½ win. Winning percentage is one way to compare the record of two teams; however, another standard method most frequently used in baseball and professional basketball standings is games behind.

For example, if a team's season record is 30 wins and 20 losses, the winning percentage would be 0.6. If a team's season record is 28–16–5 (i.e., it has won twenty-eight games, lost sixteen and tied five times), the team has participated in 49 matches. The five tie games represent 2½ wins and 2½ losses, and so the team has an adjusted record of 30½ wins and 18½ losses, resulting in a .622 winning percentage.

In baseball, pitchers are assessed wins and losses as an individual statistic and thus have his or her own winning percentage, based on his or her win–loss record. A pitcher's winning percentage is commonly expressed to three digits.

The name "winning percentage" is actually a misnomer, since a winning percentage, such as .536, is commonly not expressed as a percentage. The same value expressed as a percentage would be 53.6%. In leagues in which points are awarded for overtime losses, it is possible for a team to have a winning percentage above 0.500 (50%) despite losing more than half of the games it has played.

Some leagues and competitions may instead use a points percentage system, changing the nature of this statistic. In this type of method, used in many group tournament ranking systems, the competitors are awarded a certain number of points per win, a lesser amount of points per tie, and none for a loss. The teams are then ranked by the total amount of these accumulated points. One such method is the "three points for a win", where three points are awarded for winning a game, one point is awarded for a draw, and no points are awarded for a loss. The National Hockey League (which uses a overtime and shootouts to break all ties) awards two points for a win in regulation or overtime/shootout, one point for an overtime loss, and none for a regulation loss.[1][2]

## Statistics

### Major League Baseball

Win % Wins Losses Year Team Comment
.798 67 17 1880 Chicago White Stockings best pre-modern season
.763 116 36 1906 Chicago Orphans best National League 154-game season
.721 111 43 1954 Cleveland Indians best American League 154-game season
.716 116 46 2001 Seattle Mariners best 162-game season
.250 40 120 1962 New York Mets worst 162-game season (2 games rained out)
.265 43 119 2003 Detroit Tigers worst 162-game season (no rainouts)
.248 38 115 1935 Boston Braves worst modern National League season
.235 36 117 1916 Philadelphia Athletics worst American League season
.130 20 134 1899 Cleveland Spiders worst pre-modern season

### National Basketball Association

Win % Wins Losses Season Team Comment
.878 72 10 1995–96 Chicago Bulls best 82-game season
.110 9 73 1972–73 Philadelphia 76ers worst 82-game season
.106 7 59 2011–12 Charlotte Bobcats worst season statistically

### National Hockey League

In the National Hockey League, teams are awarded two points for a win, and one point for either a tie (a discontinued statistic) or an overtime loss. It can be calculated as follows:

$\mathrm{Points}\ \mathrm{percentage} = \frac{\mathrm{Points}}{\mathrm{Total \ possible \ points}} = \frac{ \mathrm{Overtime \ Losses + (2 \times Wins)}}{\mathrm{ 2 \times Games \ Played }}$
Points % Wins Losses Ties Points Season Team Comments
.825 60 8 12 132 1976–77 Montreal Canadiens best points % in post-expansion NHL
.131 8 67 5 21 1974–75 Washington Capitals worst points % in post-expansion NHL
Further information: List of NHL records (team)