In baseball, a closing pitcher, more frequently referred to as a closer (abbreviated CL), is a relief pitcher who specializes in getting the final outs in a close game when his team is leading. The role is often assigned to a team's best reliever. Before the 1990s, pitchers in similar roles were referred to as a fireman, short reliever, and stopper. A small number of closers have won the Cy Young Award. Dennis Eckersley, Rollie Fingers, Goose Gossage, Bruce Sutter and Hoyt Wilhelm are closers who have been elected to the Baseball Hall of Fame.
A closer is generally a team's best reliever and designated to pitch the last few outs of games when their team is leading by a margin of three runs or fewer. Rarely does a closer enter with their team losing or in a tie game. A closer's effectiveness has traditionally been measured by the save, an official Major League Baseball (MLB) statistic since 1969. Over time, closers have become one-inning specialists typically brought in at the beginning of the ninth inning in save situations. The pressure of the last three outs of the game is often cited for the importance attributed to the ninth inning.
Closers are often the highest paid relievers on their teams, making money on par with starting pitchers. In the rare cases where a team does not have one primary pitcher dedicated to this role, the team is said to have a closer by committee.
New York Giants manager John McGraw in 1905 was one of the first to use a relief pitcher to save games. He pitched Claude Elliott in relief eight times in his ten appearances. Though saves were not an official statistic until 1969, Elliot was retroactively credited with six saves that season, a record at that time. In 1977, Chicago Cubs manager Herman Franks used Bruce Sutter almost exclusively in the eighth or ninth innings in save situations. While relievers such as Rollie Fingers and Goose Gossage were already being used mostly in save situations, Franks's use of Sutter represented an incremental change. Sutter was the first pitcher to start the ninth inning in 20 percent of his career appearances. Clay Carroll in 1972 was the first pitcher to make a third of his season's appearances in the beginning of the ninth inning, which would not be repeated until Fingers in 1982. John Franco in 1987 was the first to be used over 50 percent of the time in the beginning of the ninth in a season; he had a then-record 24 one-inning saves.Lee Smith in 1994 was the first to be used over 75 percent of the time in that situation. Using the save leader from each team in the league, the average closer made his appearances in the beginning of the ninth inning 10 percent of the time in the 1970s to almost 2⁄3 of the time by 2004.