Blue Jays vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for ALCS Game 1 on Oct. 12

Odds updated as of 6:12 a.m.

The MLB schedule on Sunday includes the Toronto Blue Jays taking on the Seattle Mariners for Game 1 of the ALCS.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital information regarding this game.

Blue Jays vs Mariners Game Info

• Toronto Blue Jays (94-68) vs. Seattle Mariners (90-72)
• Date: Sunday, October 12, 2025
• Time: 8:03 p.m. ET
• Venue: Rogers Centre -- Toronto, Ontario
• Coverage: FOX

Blue Jays vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: TOR: (-166) | SEA: (+140)
• Spread: TOR: -1.5 (+116) | SEA: +1.5 (-140)
• Total: 8 -- Over: (-110) | Under: (-110)

Blue Jays vs Mariners Probable Starting Pitchers

Probable Pitchers: Kevin Gausman (Blue Jays) - 10-11, 3.59 ERA vs Bryce Miller (Mariners) - 4-6, 5.68 ERA

The Blue Jays will look to Kevin Gausman (10-11, 3.59 ERA) versus the Mariners and Bryce Miller (4-6, 5.68 ERA). Gausman and his team are 16-17-0 ATS this season when he starts. Gausman's team has been victorious in 44.4% of the games he's started as the moneyline favorite with a record of 8-10. The Mariners are 7-12-0 against the spread when Miller starts. The Mariners are 2-5 in Miller's seven starts this season that they were the moneyline underdog.

Blue Jays vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (52.6%)

Blue Jays vs Mariners Moneyline

• Looking at the moneyline for Mariners-Blue Jays, Seattle is the underdog at +140, and Toronto is -166 playing at home.

Blue Jays vs Mariners Spread

• The Blue Jays are hosting the Mariners and are favored by 1.5 runs (+116 to cover) on the runline. Seattle is -140 to cover.

Blue Jays vs Mariners Over/Under

• Blue Jays versus Mariners, on Oct. 12, has an over/under of 8, with the over being -110 and the under -110.

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Blue Jays vs Mariners Betting Trends

• The Blue Jays have won in 50, or 59.5%, of the 84 contests they have been named as odds-on favorites in this year.
• This season Toronto has been victorious 21 times in 26 chances when named as a favorite of at least -166 on the moneyline.
• The Blue Jays and their opponents have hit the over in 89 of their 164 games with a total set by oddsmakers this season.
• In 164 games with a line this season, the Blue Jays have a mark of 94-70-0 against the spread.
• The Mariners are 20-22 in games they were the underdog on the moneyline (winning 47.6% of those games).
• Seattle is 3-3 (winning 50% of its games) when it has played as a moneyline underdog of +140 or longer.
• The Mariners have played in 161 games with a set over/under, and have combined with their opponents to go over the total 86 times (86-70-5).
• The Mariners have gone 72-89-0 ATS this season.

Blue Jays Player Leaders

• Vladimir Guerrero Jr. is hitting .292 with 34 doubles, 23 home runs and 81 walks. He has an on-base percentage of .381 while slugging .467.
• Among all qualifying batters in MLB, his batting average ranks 12th, his on-base percentage ranks sixth, and he is 41st in slugging.
• Guerrero hopes to build on a five-game hitting streak in this matchup. During his last five outings he is batting .455 with three home runs, two walks and 10 RBIs.
• George Springer has 153 hits and an OBP of .397, both of which lead the Blue Jays this season. He's batting .307 and slugging .556.
• Among qualified hitters, his batting average ranks him fourth, his on-base percentage second, and his slugging percentage fifth.
• Ernie Clement has 151 hits this season and has a slash line of .277/.313/.398.
• Clement takes a three-game hitting streak into this game. In his last five games he is batting .588 with a double, a home run, a walk and five RBIs.
• Alejandro Kirk has 15 home runs, 76 RBI and a batting average of .282 this season.

Mariners Player Leaders

• Cal Raleigh has accumulated an on-base percentage of .359 and has 147 hits, both team-high numbers for the Mariners. He's batting .247 and slugging .589.
• Including all qualifying players in the big leagues, he is 98th in batting average, 20th in on-base percentage and third in slugging percentage.
• Raleigh hopes to build on a six-game hitting streak in this matchup. In his last 10 outings he is batting .333 with three doubles, three home runs, six walks and eight RBIs.
• Julio Rodriguez paces his team with a .474 slugging percentage. He has a batting average of .267 with an on-base percentage of .324.
• Including all qualifying hitters, he is 44th in batting average, 88th in on-base percentage and 38th in slugging percentage.
• Josh Naylor is batting .295 with 29 doubles, a triple, 20 home runs and 48 walks.
• Eugenio Suarez has 28 doubles, 49 home runs and 46 walks while hitting .228.

Blue Jays vs Mariners Head to Head

• 5/11/2025: 9-1 TOR (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -184, Underdog Moneyline: +154)
• 5/10/2025: 6-3 TOR (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 5/9/2025: 6-3 TOR (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -152, Underdog Moneyline: +128)
• 4/20/2025: 8-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 4/19/2025: 8-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 4/18/2025: 3-1 TOR (Favorite: Blue Jays, Spread: -1.5, Total: 8, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 7/7/2024: 5-4 TOR (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 7/6/2024: 5-4 TOR (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 7/5/2024: 2-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 4/10/2024: 6-1 SEA (Favorite: Blue Jays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -118, Underdog Moneyline: -100)

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