In every baseball game, one pitcher from the winning team is awarded a win (or W) and one from the losing team is awarded a loss. These statistics form a pitcher's win-loss record.
A win is awarded by the official scorer to the pitcher who was pitching prior to the last half-inning where the winning team last took the lead in a game. There are two exceptions. The first is when a pitcher who starts a game does not complete 5 innings. In this case the win is assigned to a relief pitcher who was judged most effective. The other exception, a relief pitcher who pitches the half-inning before a winning team takes the lead for the last time but was deemed ineffective in a brief appearance, may see the win awarded to a subsequent relief pitcher who was judged more effective.
Because of the 5-man rotation used by most teams in the Bull League, and the short 82-game schedule, it is considered an achievement for a pitcher to earn 10 wins in a season. A win heavily relies on a pitcher's team providing offensive run production, and is a controversial pitching statistic. A great pitcher may find themselves earning few wins because of a batting lineup that produces too few runs to out score the opposing teams. Likewise, a poor pitcher who allows opposing batters to hit and score frequently may have many wins because their team happens to generate more runs in offense than the team the pitcher faces. However, it is generally relied upon as an indication of a pitcher's ability, especially when considered together with ERA, and other pitching statistics.
The career win record is held by Angelo Rodriguez, who is still active. He has earned 138 wins to date, starting in 2000, in a career that saw him play for the Ohio Oxen, Nevada Speeders, Calgary Inferno and now with the Seattle Salts.