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In Game 1 of the 2025 American League Championship Series, on October 12, 2025, at Rogers Centre in Toronto, the Seattle Mariners defeated the Toronto Blue Jays 3-1, taking a 1-0 series lead.
The Blue Jays struck first with George Springer’s leadoff home run on the first pitch from Mariners starter Bryce Miller, marking Springer’s 21st postseason home run and giving Toronto a 1-0 lead. Miller, pitching on three days’ rest after a grueling Division Series, adapted quickly, retiring 17 of the last 19 batters he faced in six innings while allowing just one run on two hits.
Blue Jays starter Kevin Gausman was equally sharp early, retiring 16 consecutive Mariners batters, but faltered in the sixth when Cal Raleigh tied the game with a two-out solo home run, his 62nd of the 2025 season and the ninth of his career at Rogers Centre.
Julio Rodríguez drew a walk, and after a wild pitch advanced him to second, Jorge Polanco’s RBI single gave Seattle a 2-1 lead. The Mariners added an insurance run in the eighth inning on a sacrifice fly by Ty France, and closer Andrés Muñoz pitched a scoreless ninth to seal the victory. Seattle’s bullpen, including Andrés Muñoz and Matt Brash, combined for 3.1 scoreless innings.
Impact
This victory marked the Mariners’ first ALCS win since 2001 (also a Game 1 road win over the Yankees) and their first ALCS appearance in 24 years, electrifying a fan base hungry for playoff success.
It highlighted Seattle’s resilience despite a “decimated” pitching staff following their marathon, decisive ALDS victory against the Tigers, a 15-inning Game 5 win just days earlier. Key players like Miller (his best postseason start) and Polanco (clutching hits in consecutive series) emerged as October heroes, boosting team morale and changing the pace early in the best-of-seven series.
For Toronto, the loss squandered home-field advantage and a favorable matchup, with Gausman’s solid performance (5.2 innings pitched, 1 earned run) undermined by late-inning errors, including the wild pitch and a questionable bullpen decision to insert left-hander Brendon Little against the switch-hitting Polanco.
The Mariners now have a series lead, positioning them to potentially secure two more home games if the series returns to Seattle (Games 3-5 at T-Mobile Park). Their rotation focus—opting for Logan Gilbert on short rest in Game 2 instead of Luis Castillo—indicates aggressive management by Scott Servais, who views the matchup as a potential series finale.
Raleigh’s home run streak (now 62 HR in 2025) and Polanco’s hot bat could boost Seattle’s offense, which ranked among the top 5 in clutch hitting during the regular season.
For the Blue Jays, the loss amplifies concerns about their bats cooling off after three days off following the AL Division Series, as noted by analysts such as David Ortiz.
Outfielder Nathan Lukes avoided a fracture after hitting a ball to his knee, but remains sidelined for Game 2, which could deplete Toronto’s bench. Manager John Schneider faces scrutiny for his bullpen usage, echoing previous postseason criticism, while the top-seeded Jays (94-68 in the regular season) risk falling into an 0-2 hole before moving to Seattle.
Seattle’s gritty road win underscores its “Seize the Moment” philosophy, combining dominant pitching with timely hitting to overcome fatigue and prove they’re no fluke after a grueling AL Division Series.
The Mariners, who had a 4-2 record against Toronto in the regular season but entered as underdogs, now look like the most magical team in October, reminiscent of their attempt at an upset in the 2000 ALCS before the Yankees’ comeback victory.
For the Blue Jays, this low-scoring game (only four runs total) exposed their weaknesses in maintaining early momentum, but their deeper lineup and home field in Game 2 (with Castillo on the mound) offer a clear path to recovery.
Overall, the series is leaning toward a pitchers’ duel, but Seattle’s desire for its first pennant gives them the advantage unless Toronto stars like Vladimir Guerrero Jr. regain their form in the ALDS. A close Game 2 on October 13 is expected to even the score.

