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May 10, 2025 Tags:

The Toronto Blue Jays head to Seattle to begin a three-game series against the Mariners on Friday night. First pitch is scheduled for 9:40 p.m. ET at T-Mobile Park. With both teams showing contrasting forms, this matchup promises intrigue for fans and bettors alike.

Toronto Snaps Losing Streak but Struggles Continue

Toronto recently ended a four-game skid with an 8-5 win over the Los Angeles Angels. Center fielder Daulton Varsho led the way with 3 RBIs. However, the Blue Jays’ overall form remains shaky.

They’ve won just one of their last five road games and are 4-7 in their past 11 overall. With a 17-20 record, they’ll need consistency if they hope to turn things around on the West Coast.

Seattle Riding Momentum at Home

The Mariners, now 22-14, are heating up. They’re on a two-game winning streak after closing out a series in Sacramento with a 6-5 win over the A’s. While they’ve split their last four games, they’ve gone 8-2 in their last 10.
At home, Seattle has been solid with a 12-6 record. Their bats have come alive lately, scoring 17 runs in their last three games. That offensive spark could prove critical against a struggling Toronto pitching staff.

Pitching Duel: Gausman vs. Castillo

Toronto will send right-hander Kevin Gausman (2-3, 3.83 ERA) to the mound. Gausman impressed in his last outing, throwing six scoreless innings with nine strikeouts against the Guardians. But his road numbers tell a different story — a 5.32 ERA and an 0-3 record in four away starts this year.

Historically, Gausman hasn’t fared well against Seattle. He’s 1-4 with a 2.77 ERA in 11 career appearances (10 starts) vs. the Mariners.

Seattle counters with Luis Castillo (3-2, 3.29 ERA). He’s been sharp at home, boasting a 1.57 ERA in four starts this season at T-Mobile Park. His last start saw him give up just one run in six innings against the Rangers.

Castillo has had moderate success against Toronto in the past, holding a 2-2 record and a 3.90 ERA in five regular-season starts.

Betting Odds: Mariners Slight Favorites at Home

As per BetMGM Sportsbook:

Moneyline: Blue Jays +120 | Mariners -145

  • Run Line: Blue Jays +1.5 (-200) | Mariners -1.5 (+165)
  • Over/Under: 7 runs (Over -120 | Under +100)

Seattle is favored, and for good reason. They’re hot offensively, and Castillo is dominant at home. Meanwhile, Toronto’s road woes and shaky pitching raise red flags for bettors.

Top Picks and Predictions

Prediction: Mariners 5, Blue Jays 3

Best Bet: Mariners Moneyline (-145) Toronto’s pitching staff has allowed 5 or more runs in five straight games. They’ve also lost 12 of their last 18 road contests. Seattle, by contrast, is excelling at home and has allowed 3 or fewer runs in five of its last eight. Given these trends, backing Seattle straight up is the safest value play.

Run Line: Pass
Despite Seattle’s strong form, taking them on the run line is risky. Only one of their last five wins came by more than one run.

Over/Under: Bet Over 7 (-120)
Both teams are trending toward the Over. Toronto has gone Over the total in five straight games and is 7-2 in its last nine. Seattle is second in MLB in Over percentage at 21-13-2 and has hit the Over in nine of its last 12. Expect enough offense to clear this modest total.

Final Thoughts: Home Advantage Gives Mariners the Edge

This series opener leans heavily in favor of the Mariners. Castillo’s home dominance and Seattle’s current momentum should overpower the inconsistent Blue Jays. For bettors, the moneyline and Over are the most reliable choices in this exciting MLB matchup.

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