When discussions arise about the top pitchers in baseball—especially closers—the spotlight typically shines on the biggest names from the most high-profile teams. However, Seattle Mariners reliever Andrés Muñoz is making it impossible to overlook his dominance on the mound.
Though he’s remained relatively under the radar for much of the 2025 season, Muñoz has quietly become a shutdown force, delivering performances that rival the best in today’s game.
At just 26 years old, Muñoz has shown poise and confidence while consistently closing out games, establishing himself as not only Seattle’s most valuable bullpen asset but one of the elite closers in all of Major League Baseball.
Best Win Probability Added by Team pic.twitter.com/eid3goZ9BJ
— Thomas Nestico (@TJStats) May 27, 2025
In his most recent appearance last Friday against the Houston Astros, Muñoz pitched a flawless ninth inning to seal a 5–3 win. While it wasn’t flashy, it was a textbook example of his reliability. That outing marked his 17th save in 19 chances this season—leading all of MLB.
Mariners’ Late-Inning Confidence In Prime Finisher
What truly distinguishes Muñoz are his remarkable statistics. In 22.2 innings pitched this season, he has yet to allow a single earned run, maintaining a pristine 0.00 ERA. He’s racked up 28 strikeouts while issuing only 8 walks, resulting in an impressive 0.79 WHIP. Opposing hitters are batting a mere .106 against him, underscoring just how dominant and unhittable he’s been.
Over his first 15 appearances, Muñoz struck out 19 batters across 15 scoreless innings, stranding every baserunner he faced. His steady performance has been a critical component of the Mariners’ early-season success.
Munoz Is Gaining League Recognition
Muñoz was honored as the American League Reliever of the Month for March and April. The Mariners’ decision to sign him through 2028 is proving to be a smart investment, as he’s clearly become a standout asset this season.
He’s more than just a closer — Muñoz dictates the game’s outcome. Manager Dan Wilson has complete confidence in using him in high-pressure situations against tough opponents.
“Especially in the bullpen, having clarity around roles can be really beneficial,” Wilson said on May 23, according to Adam Jude of the Seattle Times. “And Muñy has really found his groove … He’s looking more and more at ease.”
For now, Mariners fans can savor watching their dominant reliever as he continues to build an impressive legacy, one electric inning at a time.
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