Debut
Criswell made his MLB debut for the Angels against San Diego on August 27, 2021.
Source: Baseball-ReferenceAthlete profile
Cooper Criswell
Cooper Timothy Criswell is a right-handed pitcher acquired by Seattle in January 2026.
Cooper Criswell 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
Cooper Criswell History
First MLB hold
Criswell retired the side on nine pitches to earn the first hold of his MLB career.
Source: Seattle Mariners and Major League BaseballThree-inning save
Criswell struck out five over three innings to earn a save in Seattle's shutout victory.
Source: Seattle Mariners and Major League BaseballMajor-league debut
Criswell made his MLB debut for the Angels against San Diego on August 27, 2021.
Source: Baseball-Reference
The essentials
Cooper Criswell Facts
First Hold
Criswell retired the side on nine pitches in a 5-4 win over the Athletics on April 22, 2026, earning the first hold of his MLB career.
Source: Seattle Mariners and Major League BaseballFirst Save
Criswell struck out five over three innings to earn a save in Seattle's shutout victory on March 29, 2026.
Source: Seattle Mariners and Major League BaseballIdentity
Cooper Timothy Criswell is a right-handed pitcher.
Source: Baseball-ReferenceTeam history