The Seattle Mariners won the most recent high-stakes Detroit–Seattle game, a 3–2 extra‑innings victory that sent them to the American League Championship Series.

Quick answer

  • The game in question was the decisive ALDS Game 5 between the Detroit Tigers and Seattle Mariners.
  • Seattle won 3–2 in 15 innings on a walk-off single by Jorge Polanco at T-Mobile Park.
  • The win clinched the series for the Mariners and advanced them to the ALCS.

What game this refers to

When people recently asked “who won the Detroit Seattle game,” they were usually talking about the dramatic winner‑take‑all playoff matchup in October 2025.

That contest was the deciding Game 5 of the American League Division Series between the Tigers (Detroit) and Mariners (Seattle).

How the game was decided

  • The final score was Seattle Mariners 3, Detroit Tigers 2.
  • Jorge Polanco delivered a game-ending RBI single in the 15th inning to walk it off for Seattle.
  • Detroit had led earlier after a two‑run homer by Kerry Carpenter, but Seattle rallied and eventually pulled it out in extras.

Recent series context

  • Detroit had previously taken Game 1 in Seattle, 3–2, in extra innings.
  • The Tigers also won a 9–3 comeback in another ALDS game to force that decisive Game 5.
  • Seattle’s narrow win in the finale capped one of the longest winner‑take‑all postseason games in MLB history.

Information gathered from public forums or data available on the internet and portrayed here.