The 25 Best Seasons by a Reliever in the Last 20 Years - 21. Aroldis Chapman, Cincinnati Reds (2012)

MLB

The 25 Best Seasons by a Reliever in the Last 20 Years

Brett Oswalt Jun 5th, 2017

Mariano Rivera? Francisco Rodriguez? Eric Gagne? Which pitcher will claim the top spot?

RAR: 30.8

RA9-WAR: 3.6; WAR: 3.3

Saves: 38; ERA: 1.51; FIP: 1.55

SO: 122; K/9: 15.32; K%: 44.2%

Austin Swaim -- Jun 5th, 2017

Thomas Vecchio -- Jun 5th, 2017

Austin Swaim -- Jun 5th, 2017