The Seattle Mariners have stormed into the 2025 season with grit and determination, despite battling early injuries to key arms like Logan Gilbert and George Kirby. Still, the team has embraced a resilient “next man up” mindset, clawing out clutch wins and staying atop the AL West standings. With the postseason in sight, Seattle is once again poised to be a buyer at the trade deadline — and big moves could be coming.
This is a front office known for making bold midseason splashes. Just recall the blockbuster trade for Luis Castillo in 2022 or last year’s deal for Randy Arozarena. If history repeats itself, expect another aggressive push. But to land impact talent, the Mariners may need to part with top-tier prospects — and these three stand out as prime trade chips.
1. Harry Ford (Catcher/Outfield)
Seattle’s 2021 first-round pick, Harry Ford, has elite athleticism and offensive upside — rare for a catcher. His versatility has even seen him taking reps in the outfield. But with Cal Raleigh cemented as the franchise backstop, Ford’s path to the majors is clogged. At Triple-A Tacoma, he’s boosting his value daily. For a contender needing future star power, Ford could be the centerpiece of a high-impact deal.
2. Felnin Celesten (Shortstop)
Only 19, Celesten is already making noise at Single-A Modesto, hitting over .340 with electric tools on both sides of the ball. But the Mariners are flush with shortstop prospects, including Colt Emerson and Cole Young, plus J.P. Crawford in the bigs. Celesten’s future is bright — just not necessarily in Seattle. Trading him now, while his stock is soaring, could return a proven MLB asset.
3. Tai Peete (Center Field)
Originally drafted as a shortstop, Peete has transitioned to center field and shows blazing speed and elite defense. But with Julio Rodríguez locked into that spot for the long haul, Peete faces the same fate as Jonatan Clase, who was dealt despite his upside. If Seattle wants to go all-in, Peete may be a logical piece to move.
As the Mariners push for October glory, tough calls lie ahead. Turning prospect depth into playoff firepower could be the move that finally breaks Seattle’s World Series drought.