Report: Mariners, Colt Emerson agree to record $95M extension

Colt Emerson has yet to play a game in the major leagues, but the Seattle Mariners are already making a major investment into their top prospect.

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Emerson and the Mariners have agreed to an eight-year, $95 million contract extension that runs through 2033, according to a report from FanSided’s Robert Murray on Tuesday morning. The deal includes a ninth-year club option for 2034, a full no-trade clause and escalators that could increase the contract’s value to more than $130 million.

It’s set to be the largest contract ever for a player without any MLB service time, surpassing the eight-year, $82 million deal that Milwaukee Brewers outfielder Jackson Chourio signed in December 2024, according to Spotrac.

Other national MLB reporters have since confirmed Emerson’s deal.

Drayer: A closer look at Mariners’ extension with Colt Emerson

Emerson, a 20-year-old shortstop prospect, is viewed as a cornerstone of the Mariners’ future. He’s ranked by both MLB Pipeline and Baseball America as the No. 7 overall prospect in the sport.

The left-handed-hitting Emerson was a first-round draft pick by Seattle in 2023, selected with the No. 22 overall pick out of John Glenn High School in New Concord, Ohio.

Emerson rocketed up multiple levels of the minor leagues last season, slashing .285/.383/.458 with 16 home runs, six triples, 28 doubles and an .842 OPS in 130 games between High-A Everett, Double-A Arkansas and Triple-A Tacoma.

This spring, Emerson slashed .268/.340/.488 with two homers, one triple and one double in 41 Cactus League at-bats. He’s beginning the season in Triple-A Tacoma, but many expect him to make his MLB debut at some point in 2026.

OPENING DAY DINGER FOR COLT EMERSON pic.twitter.com/W8npgHzEEv

— Tacoma Rainiers (@RainiersLand) March 27, 2026

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