300 save club
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In Major League Baseball (MLB), the 300 save club is the group of pitchers who have recorded 300 or more regular-season saves in their careers. Most commonly a relief pitcher ("reliever" or "closer") earns a save by being the final pitcher of a game in which his team is winning by three or fewer runs and pitching at least one inning without losing the lead. The final pitcher of a game can earn a save by getting at least one batter out to end the game with the tying run on base, at bat, or on deck, or by pitching the last three innings without relinquishing the lead, regardless of score.
The statistic was created by Jerome Holtzman in 1959 to "measure the effectiveness of relief pitchers" and was adopted as an official statistic by MLB in 1969. The save has been retroactively measured for past pitchers where applicable. Hoyt Wilhelm retired in 1972 and recorded just 31 saves from 1969 onwards, for example, but holds 228 total career saves.
Mariano Rivera holds the MLB save record with 652. Only Rivera and Trevor Hoffman have exceeded 500 or 600 saves, and Hoffman was the first to achieve either. Only nine pitchers have recorded 400 or more saves: Rivera, Hoffman, Kenley Jansen, Lee Smith, Craig Kimbrel, Francisco Rodríguez, John Franco, Billy Wagner, and most recently Aroldis Chapman.
Rollie Fingers was the first player to record 300 saves, reaching the mark on August 21, 1982.
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