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. These awards have been issued since 2017. 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.
Awards by month 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. In 2017, MLB added a monthly award, also given to one reliever in each league, for each month of the regular season. The award was sponsored by The Hartford, a Connecticut-based investment and insurance company, from inception through the 2020 season.
The most Reliever of the Month awards won by a single player are ten by Edwin Díaz. He is followed by Josh Hader (9), Emmanuel Clase (7), Aroldis Chapman (5), Mason Miller (5), Liam Hendriks (4), and Raisel Iglesias (4).
The table below lists monthly winners; a number in parentheses indicates how many times each player has won the award.
YearMonthAmerican LeagueNational LeagueRef.PlayerTeamPlayerTeam2017 Cleveland Indians Colorado Rockies Boston Red Sox Colorado Rockies Toronto Blue Jays Los Angeles Dodgers Seattle Mariners San Diego Padres Tampa Bay Rays Milwaukee Brewers New York Yankees Washington Nationals 2018 Seattle Mariners Milwaukee Brewers Oakland Athletics San Diego Padres Seattle Mariners Miami Marlins Seattle Mariners Pittsburgh Pirates Seattle Mariners Philadelphia Phillies Oakland Athletics Milwaukee Brewers 2019 Detroit Tigers San Diego Padres New York Yankees Milwaukee Brewers Oakland Athletics Milwaukee Brewers New York Yankees New York Mets New York Yankees Pittsburgh Pirates Boston Red Sox Milwaukee Brewers 2020 Oakland Athletics Los Angeles Dodgers Los Angeles Angels Milwaukee Brewers 2021 Boston Red Sox San Diego Padres Chicago White Sox Chicago Cubs Oakland Athletics Milwaukee Brewers Los Angeles Angels San Francisco Giants Cleveland Indians Milwaukee Brewers Chicago White Sox San Francisco Giants 2022 Toronto Blue Jays Milwaukee Brewers New York Yankees Pittsburgh Pirates Cleveland Guardians New York Mets Toronto Blue Jays New York Mets Cleveland Guardians New York Mets Cleveland Guardians San Francisco Giants 2023 Baltimore Orioles San Diego Padres Detroit Tigers San Francisco Giants Baltimore Orioles Philadelphia Phillies Baltimore Orioles Milwaukee Brewers Seattle Mariners Atlanta Braves New York Yankees Miami Marlins 2024 Oakland Athletics St. Louis Cardinals Cleveland Guardians San Diego Padres Los Angeles Angels St. Louis Cardinals Cleveland Guardians Miami Marlins/San Diego Padres Houston Astros Atlanta Braves Cleveland Guardians St. Louis Cardinals 2025 Seattle Mariners San Diego Padres Minnesota Twins New York Mets Houston Astros Pittsburgh Pirates Los Angeles Angels New York Mets Boston Red Sox Atlanta Braves Cleveland Guardians San Diego Padres 2026Louis Varland Toronto Blue Jays San Diego Padres Cade Smith Cleveland Guardians San Diego Padres Texas Rangers Philadelphia Phillies Boston Red Sox San Diego Padres Houston Astros Milwaukee Brewers Cleveland Guardians Mason Montgomery Pittsburgh Pirates
See also
Baseball awards List of MLB awards
References
External links List of winners at Baseball-Reference.com List of winners at Baseball Almanac