Seattle Mariners

About the Seattle Mariners

The Seattle Mariners are a Major League Baseball franchise based in Seattle, competing in the American League West. They share the division with four rivals and play a 162-game regular season from late March through early October, with the top finisher in each division and the three best remaining records in the American League advancing to the postseason via the Wild Card.

Home games are played at T-Mobile Park, where the five-year rolling park factor sits at 0.96 — a pitcher-friendly park that suppresses offense relative to the league. Pitcher lines tend to look better at home, and the over/under total should trend lower versus a neutral venue. Our win-probability and over/under models apply this factor directly when the SEA host a series, which is why home and away projections for the same two clubs can look noticeably different.

Below you'll find the team's current 2026 record and run differential, the active roster split into position players and pitchers (click any name to open that player's sabermetric breakdown), the most recent completed games with links to full analysis, and the latest team-specific news pulled from the official SEA feed.