The Seattle Mariners may no t have to look far to find their next impact infielder, as a potential star is already developing within the organization. Seattle has been one of the stronger teams in the American League in recent years and reached a new high point last season. Even so, the club came up short of winning the AL pennant and advancing to the World Series.
As the offseason unfolded, the Mariners made an early statement by bringing back Josh Naylor on a significant contract. While that move solidified part of the lineup, Seattle soon lost Jorge Polanco to the New York Mets, creating an immediate need in the infield. The situation became even more pressing with Eugenio Suárez also remaining on the free-agent market, leaving the Mariners with multiple potential vacancies.
While Seattle continues to explore options through free agency and trade discussions, the solution may already be in-house. According to Bleacher Report’s Joel Reuter, top prospect Colt Emerson is quickly emerging as a legitimate future star for the Mariners and could be the long-term replacement for Polanco at second base.
Reuter highlighted Emerson’s elite offensive ability, calling his bat one of the best among all prospects. He finished the 2025 season strong, posting an impressive stretch at Triple-A that included extra-base hits, home runs, and run production in a limited sample of games. Though Emerson primarily played shortstop last year, he also logged time at second and third base, giving Seattle valuable flexibility. His versatility could put pressure on players like Cole Young and Ben Williamson during spring competition.
Despite limited exposure at the Triple-A level, Emerson has little left to prove in the minors. His blend of speed, power, and defensive reliability stands out for a player his age, and his experience across multiple infield positions only strengthens his case.
Handing Emerson the starting role at second base would come with some risk, as young players often face growing pains at the major-league level. Still, the upside is undeniable. If the Mariners are willing to trust their top prospect, Emerson appears poised to become Seattle’s second baseman of the future — and possibly its next infield star.
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