Major League Baseball Reliever of the Year Award
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Major League Baseball annually honors its best relief pitchers in the American League and National League with the Mariano Rivera AL Reliever of the Year Award and Trevor Hoffman NL Reliever of the Year Award, respectively. Wikipedia
Awarded for: Best relief pitcher in the American League and National League
First award: 2014
League: Major League Baseball
Most recent: Félix Bautista (AL); Devin Williams (NL)