Major League Baseball (MLB) annually honors its best
relief pitchers in the
American League (AL) and
National League (NL) with the
Mariano Rivera AL Reliever of the Year Award and
Trevor Hoffman NL Reliever of the Year Award, respectively. The awards are named after
Mariano Rivera and
Trevor Hoffman, who played their entire careers in the respective leagues. The awards were first issued in 2014, and replaced the
Major League Baseball Delivery Man of the Year Award, which had been presented since 2005. Also that season, the
Major League Baseball Delivery Man of the Month Award was discontinued. Though all relief pitchers are eligible, all recipients of the award have been
closers.