Debut Performance
Domínguez threw a perfect eighth inning and struck out Evan Longoria in Philadelphia's 11-0 win in his MLB debut.
Source: Major League BaseballAthlete profile
Seranthony Domínguez
Seranthony Ambioris Domínguez is a Dominican right-handed relief pitcher acquired by Seattle in August 2026.
Seranthony Domínguez Dossier
Know the player. Know the game.
A sourced guide to playing history, team affiliations and the documented career behind the athlete.
Most recent first
Seranthony Domínguez History
Acquired by Seattle
Seattle acquired Domínguez from the Chicago White Sox on August 2, 2026 and activated him two days later.
Source: Seattle Mariners and Major League BaseballSix-out NLCS save
Domínguez recorded a six-out save in Philadelphia's 4-2 win over San Diego in Game 3 of the 2022 NLCS.
Source: Major League Baseball
The essentials
Seranthony Domínguez Facts
Identity
Seranthony Ambioris Domínguez is a Dominican right-handed relief pitcher.
Source: Baseball-ReferenceTeam history
Seranthony Domínguez Teams
right-handed relief pitcher
Seattle Mariners
2026–present
Source: Seattle Mariners and Major League Baseball