Blue Jays vs. Mariners Prediction: Seattle Predicted to Win Friday's MLB Matchup [5/9/2025]

The Seattle Mariners and Toronto bluejays will lock horns in MLB action at T-Mobile Park on Friday, starting at 9:40PM ET.

The Mariners will start Luis Castillo (3-2, 3.29 ERA), while the Blue Jays are going with Kevin Gausman (2-3, 3.82 ERA).

Based on the latest simulations, Dimers' proven MLB model (see Dimers Pro for full access) projects the Mariners as the most likely winner of today's game.

"Employing the latest data, our experts simulated Friday's Toronto-Seattle game 10,000 times," said Dimers' Chief Content Officer, Nick Slade.

"After computing the latest updates and thousands of other inputs, we predict the Mariners' chance of winning is 53%, while the Blue Jays' is 47%."

For a closer look at Friday's matchup, including best bets and picks, visit our interactive Blue Jays vs. Mariners predictions page.

Mariners vs. Blue Jays Prediction: Who Will Win, Cover the Run Line?

Using trusted machine learning and data, we have simulated the outcome of Friday's MLB game between the Blue Jays and Mariners 10,000 times as part of our MLB predictions coverage.

Our leading predictive model gives the Mariners a 53% chance of beating the Blue Jays.

According to our model, the Blue Jays (+1.5) have a 66% chance of covering the run line, while the 7-run over/under has a 53% chance of going over.

Blue Jays vs. Mariners Odds [5/9/2025]

We have researched the best MLB odds in America for this game, which are listed here:

Bet Type	Blue Jays	Mariners
Run Line	+1.5 (-178)	-1.5 (+155)
Moneyline	+128	-145
Total	o7 (-120)	u7 (+100)

All odds are correct at the time of publication and are subject to change.

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Blue Jays vs. Mariners Picks and Best Bets

Our model's biggest edge in today's Blue Jays vs. Mariners matchup is on the moneyline.

Our expert predictions, matched against the current odds, reveal the best MLB picks and MLB best bets for every game throughout the season.

Unlimited access to our complete set of picks, including this one, is available via Dimers Pro.

Calling Our Shot's Free MLB Picks

Calling Our Shot produces daily MLB betting content, including the latest predictions featured below.

Blue Jays vs. Mariners Game-Day Updates and Essential Details

Friday's MLB action between the Mariners and Blue Jays at T-Mobile Park is scheduled to commence at 9:40PM ET.

• Who: Toronto Blue Jays vs. Seattle Mariners
• Date: Friday, May 9, 2025
• Time: 9:40PM ET/6:40PM PT
• Venue: T-Mobile Park

Dimers.com's in-depth preview of Friday's Blue Jays vs. Mariners matchup includes our prediction, picks and the latest betting odds.

Before making any Toronto vs. Seattle picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.

Key MLB Betting Guides and Insights

• Explore how MLB odds work and dive into MLB live betting strategies
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Conclusion

We predict the Mariners, with a 53% win probability, will likely beat the Blue Jays on Friday.

AI and automation have enhanced this article to quickly deliver accurate Blue Jays vs. Mariners insights, with human oversight ensuring high editorial quality. Our predictions are sourced from 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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