Projecting the 2027 Seattle Mariners Roster

Th finale of three future roster projections.

Projecting future rosters is more of a fun exercise than one with real-world value, but it can provide some insight into where the Seattle Mariners are at eash position, and from where future solutions may come — at least the way I’m doing it here.

Below is my 26-Man roster projection for 2027, assuming continued arbitration routes, but without making a single free agent signing, including re-upping with the club’s own free agents, or trade. Options are assumed based on info through NOW (performance, market value, injuries, depth).

My 2025 Roster Projection is right here (FREE). My 2026 roster projection ($) is right here.

NOTE: Unlike the 2025 and 2026 roster projections, this projection does not come with top free agents and possibe trade targets. It’s a stretch to look even two years out on those routes of player acquisition, but literally useless to do so beyond that, so I left it out.