Apr 25, 2025; West Sacramento, California, USA; Athletics pitcher Mason Miller (19) celebrates with catcher Shea Langeliers (23) after defeating the Chicago White Sox at Sutter Health Park. Mandatory Credit: Ed Szczepanski-Imagn Images
MLB has completed its first five weeks, with big storylines ready to take focus. We are approaching the time of the year when numerous players start to find their groove and top prospects start receiving their calls to the Major Leagues. Below is a breakdown of Week 6’s top 10 relief pitchers.
1. Robert Suarez, San Diego Padres
Mar 27, 2025; San Diego, California, USA; San Diego Padres relief pitcher Robert Suarez (75) reacts after pitching during the ninth inning against the Atlanta Braves at Petco Park. Mandatory Credit: Denis Poroy-Imagn Images
Suarez has yet to surrender a run in 11 innings, posting a 0.00 ERA, 0.45 WHIP, league-leading 10 saves, and 13 strikeouts.
2. Andres Munoz, Seattle Mariners
Sep 22, 2024; Arlington, Texas, USA; Seattle Mariners relief pitcher Andres Munoz (75) pitches against the Texas Rangers during the ninth inning at Globe Life Field. Mandatory Credit: Jerome Miron-Imagn Images
The Seattle closer has pitched 13 innings, allowing zero runs, owning a 0.00 ERA, 0.85 WHIP, nine saves, and 17 strikeouts.
3. Mason Miller, Athletics
OAKLAND, CA – APRIL 17: Mason Miller #19 of the Oakland Athletics pitches during the game against the St. Louis Cardinals at the Oakland Coliseum on April 17, 2024 in Oakland, California. The Athletics defeated the Cardinals 6-3. (Photo by Michael Zagaris/Oakland Athletics/Getty Images)
Arguably the most electric arm of all closers, Miller has a 2.00 ERA, 0.78 WHIP, eight saves, and 18 strikeouts in nine innings. Mason Miller leads all relievers with an 18.00 K/9.
4. Josh Hader, Houston Astros
HOUSTON, TEXAS – AUGUST 18: Josh Hader #71 of the Houston Astros reacts to the win over Chicago White Sox at Minute Maid Park on August 18, 2024 in Houston, Texas. (Photo by Maria Lysaker/Getty Images)
Off to another dominating season, Hader is seven for seven in save opportunities with a 0.69 ERA, 0.69 WHIP, and 17 strikeouts in 13 innings.
5. Kenley Jansen, Los Angeles Angels
Mar 29, 2025; Chicago, Illinois, USA; Los Angeles Angels pitcher Kenley Jansen (74) after the game against the Chicago White Sox at Guaranteed Rate Field. Mandatory Credit: Matt Marton-Imagn Images
One of the three closers not to allow a run, Jansen has a 0.88 WHIP, six saves, and eight strikeouts in eight innings.
6. Jeff Hoffman, Toronto Blue Jays
Mar 30, 2025; Toronto, Ontario, CAN; Toronto Blue Jays pitcher Jeff Hoffman (23) throws a pitch during the ninth inning against the Baltimore Orioles at Rogers Centre. Mandatory Credit: John E. Sokolowski-Imagn Images
Hoffman has locked down the closer role for Toronto with a 1.35 ERA, 0.68 WHIP, six saves, and 19 strikeouts in 13.1 innings.
7. Kyle Finnegan, Washington Nationals
Apr 6, 2025; Washington, District of Columbia, USA; Washington Nationals pitcher Kyle Finnegan (67) throws the ball during the ninth inning against the Arizona Diamondbacks at Nationals Park. Mandatory Credit: Daniel Kucin Jr.-Imagn Images
Second in MLB with nine saves, Finnegan posts a 1.64 ERA and 13 strikeouts in 11 innings.
8. Aroldis Chapman, Boston Red Sox
Apr 4, 2025; Boston, Massachusetts, USA; Boston Red Sox relief pitcher Aroldis Chapman (44) delivers a pitch during the ninth inning against the St. Louis Cardinals at Fenway Park. Mandatory Credit: Paul Rutherford-Imagn Images
Showing no signs of slowing down in his 16th season, Chapman owns a 1.93 ERA, 1.18 WHIP, four saves, and 14 strikeouts in 9.1 innings.
9. Jason Adam, San Diego Padres
Apr 9, 2025; West Sacramento, California, USA; San Diego Padres pitcher Jason Adam (40) throws a pitch against the Athletics during the eighth inning at Sutter Health Park. Mandatory Credit: Darren Yamashita-Imagn Images
The top setup man has dominated out of the bullpen, registering a 0.69 ERA, 0.85 WHIP, nine holds, and 17 strikeouts in 13 innings.
10. Lucas Erceg, Kansas City Royals
Apr 7, 2025; Kansas City, Missouri, USA; Kansas City Royals pitcher Lucas Erceg (60) pitches during the ninth inning against the Minnesota Twins at Kauffman Stadium. Mandatory Credit: William Purnell-Imagn Images
Erceg has been Kansas City’s most reliable bullpen arm with a 0.87 ERA, 0.39 WHIP, one save, eight holds, and seven strikeouts in 10.1 innings.
