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Blue Jays vs Mariners Odds, Prediction & Game 3 Expert Picks

Expert ALCS betting preview with Blue Jays vs Mariners odds, analysis, and prediction.

(Photo by Getty Images) George Kirby
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Toronto (0-2) at Seattle (2-0)

  • When: Oct 15 2025, 8:08 PM
  • Where: T-Mobile Park, Seattle
  • Where to watch: Fox Sports 1

Toronto vs Seattle MLB Playoff Preview & Pick

Moneyline: Seattle -141 
Spread: Seattle -1.5 (+158)
Total: 7.0

Seattle Mariners Outlook

The Mariners have stormed out to a 2-0 series lead after two convincing road wins in Toronto. They handled business in Game 1 behind Cal Raleigh’s home run and Jorge Polanco’s clutch hitting, then exploded in Game 2 with long balls from Julio Rodríguez, Polanco, and Josh Naylor. Now they head home with the upper hand, looking to put the Blue Jays on the brink.

Seattle has shown resilience and balance, timely hitting, reliable pitching, and strong defense. Backup catcher Mitch Garver knows better than to get comfortable. After experiencing a 2-0 ALCS lead vanish with Texas last year, he’s preaching focus and urgency. Manager Dan Wilson echoed that message, emphasizing that each game has its own rhythm and momentum, and the Mariners can’t afford to relax.

George Kirby takes the mound for Game 3, bringing solid postseason command and strikeout stuff. He’s held opponents to just three runs across 10 playoff innings so far. With Seattle’s crowd behind him, Kirby’s ability to get ahead in counts could dictate how long he stays in control.

Player Prop Pick – Seattle: Julio Rodríguez over 1.5 total bases (+110) – Rodríguez has been locked in at the plate, showing power and patience. Expect him to stay hot in front of the home fans.

Toronto Blue Jays Outlook

The Blue Jays’ bats have gone quiet at the worst possible time. After piling up 34 runs in their ALDS win over the Yankees, they’ve managed only four runs through the first two games of the ALCS. That lack of offense has put them in a must-win spot heading into Seattle, where they’ll need to take at least two of three to keep their season alive.

Manager John Schneider remains optimistic but admits the team must find ways to create scoring chances. Shane Bieber gets the start Wednesday, and while his pedigree is undeniable, he’s still rounding back into form after Tommy John surgery. Bieber has a career 2.30 ERA against Seattle and will need every bit of that efficiency to keep Toronto in this one.

Veteran leadership and early run support are crucial if the Jays want to flip the script. They’ve struggled to generate quality contact, and patience at the plate could be the key to breaking through against Kirby’s control-first approach.

Player Prop Pick – Toronto: Vladimir Guerrero Jr. to hit a home run (+400) – Guerrero’s swing looks due to connect, and Bieber’s experience needs a jolt of power behind it if Toronto wants momentum.

Prediction

Seattle has all the momentum, depth, and home-field advantage working in its favor. Kirby has been steady, the offense is firing from multiple spots in the lineup, and confidence is high. Toronto’s lineup has the talent to respond, but until their power returns, they’ll be fighting uphill.

Score Prediction: Mariners 5, Blue Jays 3
Pick: Seattle -1.5 (+158)
Total: Over 7.0 (-106) 

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