Emerson, 20, is ranked as the Mariners #1 prospect and #7 overall prospect across the Majors
SEATTLE – Seattle Mariners Executive Vice President & General Manager of Baseball Operations Justin Hollander announced today the Mariners have signed infielder Colt Emerson to a contract extension through the 2033 season, with a club option through 2034. Emerson has been selected to the 40-man roster and optioned to Triple-A Tacoma.
“Colt is a tremendous person and true all-around player who is committed to achieving excellence in everything he does, both on and off the field.” said President of Baseball Operations Jerry Dipoto. “We all look forward to his eventual arrival in Seattle, where he will be a Mariner for many years to come.”
“Colt’s talent is matched by his work ethic, character, and desire to win.” said Executive Vice President & General Manager Justin Hollander. “We are thrilled as an organization to reach an agreement on a long-term extension with him.”
Emerson, 20, is ranked as the Mariners #1 prospect, and the #7 overall prospect in the Major Leagues, according to both MLB Pipeline and Baseball America. At approximately seven years younger than the average Triple-A player this season, the 20-year-old infielder has gotten off to a hot start with the Tacoma Rainiers, batting .357 (5×14) with a double, home run and 1.000 OPS in 15 plate appearances.
In 227 career minor league games, Emerson is batting .288 (255×885) with 167 runs, 56 doubles, 7 triples, 23 home runs, 130 RBI, 138 walks and 37 stolen bases, getting on base at a .398 clip, slugging .445 with an .843 OPS. He has appeared mostly at shortstop (196 G), also appearing at third base (15 G) and second base (9 G).
Emerson, who will make his Major League debut when he first appears in a game, joins a list of homegrown Mariners players who have signed contract extensions with the team in recent years, which includes Cal Raleigh and Julio Rodríguez. Current players Luis Castillo, J.P. Crawford, and Josh Naylor have also signed to stay in Seattle.
The left-handed hitting infielder was selected by the Mariners in the 1st round (22nd overall) of the 2023 MLB First-Year Player Draft out of John Glenn High School in New Concord, Ohio. The Ohio native made his professional debut with the Mariners in 2023, combining to hit .374 (34×91) in 24 games between the Rookie ACL Mariners (8 G) and Class-A Modesto (16 G), helping Modesto to a California League championship.
In a corresponding 40-man roster move, right-handed pitcher Ryan Loutos has been designated for assignment.
