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

Odds updated as of 7:12 p.m.

The Toronto Blue Jays versus the Seattle Mariners in Game 1 of the ALCS is on the MLB schedule for Sunday.

All the information you need to make smart bets on this matchup at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

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: (-162) | SEA: (+136)
• Spread: TOR: -1.5 (+122) | SEA: +1.5 (-146)
• Total: 8.5 -- Over: (-100) | Under: (-122)

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 probable pitchers are Kevin Gausman (10-11, 3.59 ERA) for the Blue Jays and Bryce Miller (4-6, 5.68 ERA) for the Mariners. Gausman's team is 16-17-0 against the spread this season in his starts. Gausman's team has a record of 8-10 this season when he starts and they are the favorite on the moneyline. When Miller starts, the Mariners have gone 7-12-0 against the spread. 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: Blue Jays win (53.4%)

Blue Jays vs Mariners Moneyline

• Toronto is the favorite, -162 on the moneyline, while Seattle is a +136 underdog on the road.

Blue Jays vs Mariners Spread

• The Mariners are at the Blue Jays, and are +1.5 on the runline. The Mariners are +122 to cover the spread, and the Blue Jays are -146.

Blue Jays vs Mariners Over/Under

• An over/under of 8.5 has been set for Blue Jays-Mariners on Oct. 12, with the over being -100 and the under -122.

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Blue Jays vs Mariners Betting Trends

• The Blue Jays have come away with 50 wins in the 84 contests they have been listed as the favorites in this season.
• Toronto has a record of 24-7 when favored by -162 or more this year.
• The Blue Jays and their opponents have hit the over in 89 of their 164 games with a total set by oddsmakers this season.
• The Blue Jays have an against the spread mark of 94-70-0 in 164 games with a line this season.
• The Mariners have won 20 of the 42 games they were the moneyline underdog this season (47.6%).
• Seattle has a record of 4-4 in games it has played as a moneyline underdog with odds of +136 or longer (50%).
• The Mariners have had an over/under set by bookmakers 161 times, and have combined with opponents to go over the total in 86 of those games (86-70-5).
• The Mariners have put together a 72-89-0 record against the spread this season (covering 44.7% of the time).

Blue Jays Player Leaders

• Vladimir Guerrero Jr. has 34 doubles, 23 home runs and 81 walks while hitting .292. He has an on-base percentage of .381 and a slugging percentage of .467.
• Among qualifying hitters in baseball, he ranks 12th in batting average, sixth in on-base percentage, and 41st in slugging.
• Guerrero hopes to build on a five-game hitting streak in this matchup. During his last five outings he is hitting .455 with three home runs, two walks and 10 RBIs.
• George Springer leads Toronto with 153 hits and an OBP of .397 this season. He's batting .307 and slugging .556.
• Among qualifying 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 has picked up a hit in three straight games. In his last five games he is batting .588 with a double, a home run, a walk and five RBIs.
• Alejandro Kirk has been key for Toronto with 127 hits, an OBP of .348 plus a slugging percentage of .421.

Mariners Player Leaders

• Cal Raleigh has accumulated 147 hits with a .359 on-base percentage, leading the Mariners in both statistics. He's batting .247 and slugging .589.
• Including all qualified hitters in the big leagues, he ranks 98th in batting average, 20th in on-base percentage and third in slugging percentage.
• Raleigh brings a six-game hitting streak into this matchup. In his last 10 outings he is hitting .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.
• He ranks 44th in batting average, 88th in on-base percentage and 38th in slugging percentage in the big leagues.
• 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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