Major League Baseball Reliever of the Month Award

Major League Baseball (MLB) honors its best relief pitchers with a Reliever of the Month Award for one pitcher in the American League (AL) and one in the National League (NL) during each month of the regular season.

From 2005 to 2013, MLB honored a single relief pitcher across both leagues with the Delivery Man of the Month Award during each month of the regular season.

MLB previously introduced a Reliever of the Year Award in 2014, awarded to one reliever in the American League and one in the National League.

[3] The award was sponsored by The Hartford, a Connecticut-based investment and insurance company, from inception through the 2020 season.

[2][4] The below table lists monthly winners; a number in parentheses indicates the instance of winning the award, for players who have previously won.

Edwin Díaz has won the award five times with the Seattle Mariners and three times with the New York Mets.
Emmanuel Clase won the award seven times with the Cleveland Indians/Guardians.