1. Most career saves
Held by: Mariano Rivera
Rivera is the greatest closer in MLB history by a margin wider than the Grand Canyon. He broke Trevor Hoffman’s career saves record in September 2013 before retiring with 652 career saves following the 2014 season. The active career saves leader is Joe Nathan with 377. Given the fact that Nathan has already celebrated his 40th birthday, he will never realistically challenge Rivera’s record.