Mariners' Postseason Success Reshapes 2026 Roster and Free-Agent Priorities

The Seattle Mariners have experienced mixed results from their top prospects in recent years, with promising performances expected from emerging players like Emerson Hancock and Cole Young in 2026. Emerson Hancock is poised to gain significant playing time, especially with the departure of Eugenio Suárez, potentially strengthening Seattle's infield alongside a possible reunion with Josh Naylor. The Mariners' 2025 success was largely credited to offensive acquisitions like Josh Naylor, Eugenio Suárez, and the return of Jorge Polanco, who played pivotal roles during the postseason. Given Polanco's strong performance and critical contributions in the playoffs, the Mariners are prioritizing re-signing him alongside Naylor this offseason to maintain their offensive momentum. Meanwhile, other MLB teams like the Houston Astros are considering trades involving players such as Christian Walker, whose contract and performance issues could make him a trade candidate, with potential suitors including the White Sox and Padres. These strategic moves and prospects position the Mariners and other teams for significant roster changes and competitive dynamics heading into the 2026 season.