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Mariners vs. Blue Jays prediction: Why Toronto is favored to win Game 1 of ALCS [10/12/2025]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Seattle Mariners vs Toronto Blue Jays predictions for MLB Sunday.
MLB action continues on Sunday at 8:03PM ET as the Seattle Mariners take on the Toronto Blue Jays in Game 1 of the American League Championship Series at Rogers Centre.
Kevin Gausman (1-0, 1.59 ERA in 2025 postseason) will start for the Blue Jays, pitting him against Bryce Miller (0-0, 4.15 ERA) for the Mariners.
Based on updated simulation results, Dimers' advanced MLB model predicts the Blue Jays as the most likely winner of today's game.
"Using the most recent data, our experts ran 10,000 simulations of Sunday's Mariners-Blue Jays game," said Dimers' Chief Content Officer, Nick Slade.
"After accounting for recent updates and other variables, our prediction shows the Blue Jays with a win probability of 59%, while the Mariners have 41%."
For further insights into Sunday's matchup, including best bets and picks, visit our interactive Mariners vs. Blue Jays predictions page.
Mariners vs. Blue Jays prediction: Who will win Game 1?
Using trusted machine learning and data, we have simulated the result of Sunday's MLB game between the Mariners and Blue Jays 10,000 times as part of our MLB predictions coverage.
Our independent predictive model currently gives the Blue Jays a 59% chance of defeating the Mariners.
According to our model, the Mariners (+1.5) have a 56% chance of covering the run line, while the 8-run over/under has a 65% chance of going over.
Mariners vs. Blue Jays Game 1 odds [10/12/2025]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Mariners | Blue Jays |
|---|---|---|
| Run Line | +1.5 (-135) | -1.5 (+118) |
| Moneyline | +140 | -162 |
| Total | o8 (-109) | u8 (-110) |
All odds are correct at the time of publication and are subject to change.
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Mariners vs. Blue Jays picks and best bets for Game 1
Our model's strongest edge in today's Mariners vs. Blue Jays matchup is on the run line.
Our expert predictions, matched against the latest odds, reveal the best MLB picks and MLB best bets for every game throughout the season.
Unlimited access to our full set of picks, including this one, is available via Dimers Pro.
Mariners vs. Blue Jays game-day updates and essential details
Sunday's MLB matchup between the Blue Jays and Mariners at Rogers Centre is scheduled to begin at 8:03PM ET.
- Who: Seattle Mariners vs. Toronto Blue Jays
- Date: Sunday, October 12, 2025
- Time: 8:03PM ET/5:03PM PT
- Venue: Rogers Centre
Dimers' full preview of Sunday's Mariners vs. Blue Jays matchup includes our prediction, picks and the latest betting odds.
Before making any Mariners vs. Blue Jays picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.
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Conclusion
We predict the Blue Jays, with a 59% win probability, will likely beat the Mariners on Sunday.
AI and automation have enhanced this article to quickly deliver accurate Mariners vs. Blue Jays insights, with human oversight ensuring high editorial quality. Our predictions are based on the latest data to help you make informed decisions. For additional resources and advice on responsible gambling, please call 1-800-GAMBLER.
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More on MLB
Keep up with the latest MLB betting news and MLB parlay picks throughout the season. Plus, our World Series odds provide the most accurate probabilities for the World Series, American League, National League and each division.
Make the most of your sports betting experience by exploring our comprehensive list of US betting apps, and the latest sportsbooks in 2025, ensuring you never miss a top new-user deal.
Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.
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