The most recent Seattle Mariners game on record was a 6–4 loss to the Cleveland Guardians, so the Guardians won the latest Mariners game.

Quick Scoop

  • Matchup: Seattle Mariners vs. Cleveland Guardians.
  • Result: Guardians 6, Mariners 4.
  • Context: This was the Mariners’ most recent regular-season game listed for the 2026 season.
  • Notable note: Coverage highlights that rookie Chase DeLauter homered twice in his first regular-season game, which helped power Cleveland past Seattle.

If you were asking about a different specific date or opponent (for example, “who won the Mariners game yesterday?”), the answer might change depending on the exact game, but based on the latest available listing, the Guardians won 6–4.

TL;DR: Who won the Mariners game?
The Cleveland Guardians beat the Seattle Mariners 6–4 in their latest recorded game.

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