Toronto Blue Jays vs. Seattle Mariners Prediction and Picks - May 10, 2025

Author: Michael Briggs Last Updated: May 10, 2025 Game Start: 9:40pm EST

On Saturday, the Toronto Blue Jays will face the Seattle Mariners at T-Mobile Park, and we have you ready to go with our Blue Jays vs. Mariners prediction. First pitch is at 9:40 p.m. ET.

Seattle won two of three games against Toronto in mid-April. The Blue Jays are 6-4 in their last ten meetings with the Mariners. The under was 6-4 in those ten games. If you want the Blue Jays vs. Mariners prediction, read on and check out our MLB Predictions to beat the sportsbooks!

*Article published before the conclusion of Friday night's game.

About the Author: Mike Briggs

I'm among the top baseball handicappers at Winners and Whiners! Pick up a subscription for expert MLB analysis and useful baseball betting trends.

Blue Jays hope to build off their last win

Toronto (17-20 SU, 21-16 RL, and 17-20 O/U) dropped two of three games to Los Angeles (AL) earlier this week. The Blue Jays are 4-6 in their last ten games.

Canada's ballclub will turn to righty Bowden Francis on Saturday against Seattle. In his last outing, the fourth-year MLB pro allowed four runs and six hits in a 4.1-frame loss to Cleveland. He is 2-5 with a 5.66 ERA and 1.37 WHIP in seven starts (35.0 IP).

Toronto may not be a serious contender in 2025, but it's unlikely to be a ballclub bettors can write off. The club had failed pursuits of big-name free agents but made some solid signings in Max Scherzer, Anthony Santander, and Andrés Giménez. With Bo Bichette, Vladimir Guerrero Jr., Santander, and Dalton Varsho, the top of the lineup is strong, and a rotation of José Berríos, Kevin Gausman, Chris Bassitt, and Scherzer allows Toronto to be patient with Francis and Yuriel Rodriguez. Some injuries to the Blue Jays' bullpen will test their depth early on, which is scary considering how inefficient the relief group was a year ago.

Toronto Blue Jays Baseball Injury Report: 2B Andrés Giménez (quad) is day-to-day for tomorrow's game against the Mariners.

Seattle is 12-6 at home this season

Seattle (16-12 SU, 15-13 RL, and 15-11-2 O/U) took two of three games from the Athletics in its previous series. The Mariners are 8-2 in their last ten games.

Seattle will turn to right-hander Logan Evans tomorrow against the Blue Jays. In his last appearance, the 23-year-old rookie allowed 6 runs on 11 hits and 2 walks in a five-frame loss to Texas. He is 1-1 with a 7.20 ERA and 1.80 WHIP in his first two MLB starts (10.0 IP).

Seattle was among the most disappointing baseball teams last year, as it wasted a fantastic pitching rotation (2.85 ERA and a .205 OBA) with an inability to provide run support. The Mariners ranked 20th in runs scored in 2024, averaging 4.1 per game. Close losses were too common for M's fans, but will they turn it around this year? Seattle has been more productive at the plate in 2025, ranking seventh in MLB in runs scored (5.1 per game), and has stayed dominant on the mound (2.95 ERA and .226 OBA).

Seattle Mariners Baseball Injury Report: No new injuries for Saturday night's game against Toronto.

Best Bets for Toronto Blue Jays vs. Seattle Mariners

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Who will win this MLB matchup? Read more about our Blue Jays vs. Mariners prediction!

Prediction: Mariners ML

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The Blue Jays and Mariners will combine for at least nine runs on Saturday night in Seattle.

The home team averages 4.8 runs per game in front of their fans and 4.7 runs under the lights at night. They can jump out to an early lead against the unreliable Francis and add on insurance runs against the Toronto bullpen (4.24 ERA and 17 HR allowed).

The visitors should also be confident facing a rookie hurler making his third-ever big league start. Evans was roughed up in his previous appearance after a solid MLB debut, putting 13 runners on base in five frames. The Blue Jays may not be a potent offensive ballclub, but they will jump all over any mistakes Evans makes over the heart of the dish. Seattle's bullpen has allowed 16 long balls this year, too.

Prediction: Over 8
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Author Profile

Michael Briggs , "Michael Briggs"

I jumped into sports betting headfirst due to an irresistible call to action. I am a sports writer by trade, earning my B.A. in Journalism with a sports reporting concentration from Michigan State in 2012. With my journalism background, I combine thorough research with a keen eye for hidden value to generate consistent profits for my clients. In my free time, I enjoy talking "shop" with like-minded people. This allows me to see different angles and avoid traps that derail my progress. In short, their insight and intuition assist or deter my decision-making process. The pitfalls to avoid in sports gambling are following the crowd, assumptions, gullibility, and lack of accountability. A bettor is never as hot or cold as their best and worst streaks. By dedicating yourself to obtaining knowledge, you will never feel like you know it all. At its core, sports betting is about intuition. When you can predict which way the wind will blow, you will never feel caught up in the current stream. Sometimes you need to be counterintuitive. Risk is in the mind of the beholder, but when you bet with me, you'll find that the reward justifies the wager!