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Seattle Mariners vs Toronto Blue Jays ALCS Game 6 Preview
The Seattle Mariners vs Toronto Blue Jays ALCS Game 6 is set for Sunday, October 19, 2025, and it could be the night Seattle finally makes franchise history. The Mariners are just one win away from reaching their first-ever World Series, holding a 3-2 series lead after an unforgettable comeback in Game 5.
Seattle erupted for five runs in the eighth inning on Friday night, capped by a grand slam from Eugenio Suárez that silenced the Rogers Centre crowd. The Mariners have momentum on their side heading into Game 6, where a win would close out the series and send them to the Fall Classic for the first time since joining the league in 1977.
For the Toronto Blue Jays, this is about survival. The franchise that won back-to-back World Series titles in 1992 and 1993 faces elimination on home turf. Manager John Schneider’s team will need to find its confidence again after surrendering a late lead in Game 5 that flipped the entire series.
Stay updated with current moneyline movement and over/under totals on the MLB odds and scores page.
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Line Movement and Betting Odds
The latest betting lines list the Toronto Blue Jays as narrow home favorites at –120, while the Seattle Mariners are +102 underdogs. The total is set at 8.0 runs, with early sharp action leaning toward the over after Seattle’s late offensive explosion in Game 5.
You can find more model projections and betting insights in the MLB picks section.
Matchup Breakdown
Seattle will start right-hander Logan Gilbert (1-0, 2.45 ERA), who earned a win earlier in the series and has shown remarkable composure in big moments. In Game 2, Gilbert lasted three innings, giving up three runs (two earned), but the Mariners went on to win 10-3. He knows this opportunity could define his career, calling it “a dream every kid has growing up.”
The Blue Jays will counter with rookie Trey Yesavage (1-1, 4.82 ERA), who struggled in his first ALCS appearance but has shown electric strikeout ability. In the ALDS, he fanned 11 over 5 ⅓ scoreless innings against the Yankees. Toronto hopes he can rediscover that form against a red-hot Seattle lineup.
The Seattle Mariners have leaned on timely hitting from Cal Raleigh and Eugenio Suárez, while Julio Rodríguez has anchored the lineup with elite defense and consistent contact. On the mound, Seattle’s bullpen — led by Andrés Muñoz and Matt Brash — has been lights-out, combining for a 1.89 ERA in the postseason.
For Toronto, George Springer’s health remains a storyline after taking a fastball to the knee in Game 5. X-rays were negative, and he’s expected to play. The Blue Jays will also look for Vladimir Guerrero Jr. and Bo Bichette to spark an offense that went cold late in the last matchup.
For a full look at postseason trends and advanced stats, visit the expert baseball betting guide.
Key Storylines
Seattle’s resilience has been the difference in this series. After falling behind 2-1, the Mariners roared back with a dominant bullpen and clutch power hitting. Manager Dan Wilson praised his players’ mental strength, emphasizing that “the job isn’t finished yet.”
Toronto’s bullpen decisions in Game 5 have come under heavy scrutiny. John Schneider’s choice to bypass closer Jeff Hoffman in favor of Brendon Little and Seranthony Domínguez proved costly. That eighth-inning collapse is something the Blue Jays will need to overcome emotionally if they hope to extend the series.
Historically, the Mariners have struggled in elimination or clinching games, but this team feels different. They’re 6-1 on the road this postseason, proving they can win under pressure. A Game 6 victory would not only secure Seattle’s first AL pennant — it would validate years of roster building, player development, and postseason heartbreak.
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Prediction
Momentum is everything in October baseball, and right now, the Seattle Mariners have it. Logan Gilbert’s command and Seattle’s relentless lineup give them the edge against a young Blue Jays team still learning how to close on the biggest stage.
The Blue Jays will fight hard behind their home crowd, but the Mariners’ bullpen depth and clutch hitting could prove decisive once again. Expect a close, high-intensity matchup with both teams scoring early before Seattle’s relief corps locks it down late.
Projected Score: Seattle Mariners 5, Toronto Blue Jays 4
Best Bet: Mariners +102
Secondary Lean: Over 8.0 (-110)
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