Honorable mentions: Dan Quisenberry, Troy Percival, David Robertson
10. Robb Nen (1993-2002)
In only ten MLB seasons, Robb Nen compiled 314 saves, making him one of 31 pitchers to reach 300 in a career. A three-time all-star, Nen had a career ERA of 2.98 and topped the NL with 45 saves in 2001.
9. John Wetteland (1989-2000)
Perhaps best known as the predecessor to Mariano Rivera, John Wetteland was a top closer in his own right, collecting 330 saves with a 2.93 ERA from 1989 through 2000. He earned 150 saves for the Rangers and 105 for the Montreal Expos, making him one of a handful of pitchers to save 100 games for multiple teams.
8. Joe Nathan (1999-2016)
Although not a full-time closer until age 29, Joe Nathan collected 377 career saves, ranking 11th on the all-time list. Originally a starter, his ERA sits at 2.87 for his career, but was 2.50 as a relief pitcher, better than every reliever in the Hall of Fame except Mariano Rivera and Hoyt Wilhelm. Nathan made six all-star teams and twice finished in the top 5 in the Cy Young Award voting.
7. John Franco (1984-2005)
One of only eight men to save 400 or more games, Franco compiled 424 of them over 21 seasons (the most of any lefthander) and also tallied 90 wins. A three-time leader in saves, he pitched in the Majors until age 44, appearing in a total of 1,119 games.
6. Francisco Rodriguez (2002-2017)
5. Jonathan Papelbon (2005-2016)
A six-time all-star, Papelbon had a career ERA of 2.44, lower than any Hall of Fame reliever except Rivera, despite pitching much of his career in Fenway Park. The owner of 368 saves, the highlight of Papelbon's career was the 2007 World Series, when he posted a 0.00 ERA and saved three games, including the clincher.
4. Tom Henke (1982-1995)
A 6'5" fireballer known as The Terminator, Tom Henke was the most feared reliever of his day, blowing hitters away with his fastball or folding them with his forkball. He had a 2.67 career ERA and 311 saves, topping the AL with 34 in 1987. In 1995, he enjoyed the best season of his career, pitching to a 1.82 ERA and saving 36 games before retiring to spend time with his family.
3. Craig Kimbrel (2010-present)
A nine-time all-star and 2011 Rookie of the Year, Kimbrel topped the NL in saves every year from 2011 through 2014, and has 440 in his career. Although no longer a dominant closer, he was nearly untouchable in his prime, sporting a 1.91 ERA and 41.6% strikeout rate between 2010 and 2018.
2. Aroldis Chapman (2010-present)
Much could be said about the amazing career of Aroldis Chapman, from throwing the fastest pitch in MLB history as a rookie, to his incredible performance in the 2016 stretch run with the Cubs, to reestablishing himself as an elite closer in his age-37 and -38 seasons. The all-time leader in strikeouts by a relief pitcher, Chapman could take over the #1 spot on this list if he continues his superb pitching.
1. Kenley Jansen (2010-present)