when do the mariners play

The Seattle Mariners will play their next game on Sunday, October 12, 2025, at 8:03 PM against the Toronto Blue Jays in the American League Championship Series (ALCS) at Rogers Centre in Toronto. Their following games are scheduled on October 13 (time TBD) also at Toronto, and then Oct 15-17 (times TBD) at home in T-Mobile Park, Seattle. These games are part of the 2025 ALCS postseason series.