Blue Jays vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for ALCS Game 7 on Oct. 20

Odds updated as of 4:11 a.m.

The MLB slate on Monday includes the Toronto Blue Jays facing the Seattle Mariners in Game 7 of the ALCS.

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

Blue Jays vs Mariners Game Info

• Toronto Blue Jays (94-68) vs. Seattle Mariners (90-72)
• Date: Monday, October 20, 2025
• Time: 8:08 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: (-122) | SEA: (+104)
• Spread: TOR: -1.5 (+168) | SEA: +1.5 (-205)
• Total: 7.5 -- Over: (-104) | Under: (-118)

Blue Jays vs Mariners Probable Starting Pitchers

Probable Pitchers: Shane Bieber (Blue Jays) - 4-2, 3.57 ERA vs George Kirby (Mariners) - 10-8, 4.21 ERA

The Blue Jays will give the nod to Shane Bieber (4-2, 3.57 ERA) against the Mariners and George Kirby (10-8, 4.21 ERA). Bieber and his team have a record of 5-4-0 against the spread when he starts. Bieber's team has won 71.4% of his starts when they are favored on the moneyline (5-2). When Kirby starts, the Mariners are 10-14-0 against the spread. The Mariners have been the underdog on the moneyline in three of Kirby's starts this season, and they went 2-1 in those matchups.

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

• Seattle is a +104 underdog on the moneyline, while Toronto is a -122 favorite at home.

Blue Jays vs Mariners Spread

• The Blue Jays are hosting the Mariners and are favored by 1.5 runs on the spread. The Blue Jays are +168 to cover the runline, with the Mariners being -205.

Blue Jays vs Mariners Over/Under

• The over/under for Blue Jays-Mariners on Oct. 20 is 7.5. The over is -104, and the under is -118.

Bet on Toronto Blue Jays vs. Seattle Mariners on FanDuel today!

Blue Jays vs Mariners Betting Trends

• The Blue Jays have come away with 51 wins in the 88 contests they have been listed as the favorites in this season.
• This year Toronto has won 47 of 75 games when listed as at least -122 on the moneyline.
• The Blue Jays and their opponents have hit the over in 94 of their 170 games with a total set by oddsmakers this season.
• The Blue Jays have posted a record of 97-73-0 against the spread this season.
• The Mariners have won 23 of the 46 games they were the moneyline underdog this season (50%).
• Seattle has an 18-13 record (winning 58.1% of its games) when playing as a moneyline underdog of +104 or longer.
• The Mariners have played in 167 games with an over/under set, and have combined with their opponents to go over the total 91 times (91-71-5).
• The Mariners have gone 75-92-0 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.
• He ranks 12th in batting average, sixth in on-base percentage, and 41st in slugging among qualifying hitters in MLB.
• Guerrero will look for his fifth straight game with a hit in this contest. In his last five games he is hitting .500 with three doubles, three home runs, four walks and three RBIs.
• George Springer leads the Blue Jays in OBP (.397) and total hits (153) this season. He's batting .307 while slugging .556.
• His batting average is fourth among qualified players, his on-base percentage second, and his slugging percentage fifth.
• Ernie Clement has collected 151 base hits, an OBP of .313 and a slugging percentage of .398 this season.
• Clement brings a five-game hitting streak into this game. In his last five games he is hitting .381 with two doubles, a triple, a walk and two RBIs.
• Alejandro Kirk is batting .282 with a .348 OBP and 76 RBI for Toronto this season.
• Kirk brings a two-game hitting streak into this matchup. In his last five games he is hitting .263 with a double, a home run, four walks and four RBIs.

Mariners Player Leaders

• Cal Raleigh has racked up a team-high OBP (.359), while leading the Mariners in hits (147). He's batting .247 and slugging.
• Including all qualified hitters in the big leagues, he ranks 98th in batting average, 20th in on-base percentage and third in slugging percentage.
• Julio Rodriguez is slugging .474 to lead his team. He has a batting average of .267 with an on-base percentage of .324.
• Including all qualified players, he ranks 44th in batting average, 88th in on-base percentage and 38th in slugging percentage.
• Josh Naylor is hitting .295 with 29 doubles, a triple, 20 home runs and 48 walks.
• Eugenio Suarez is hitting .228 with 28 doubles, 49 home runs and 46 walks.

Blue Jays vs Mariners Head to Head

• 10/19/2025: 6-2 TOR (Favorite: Blue Jays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 10/17/2025: 6-2 SEA (Favorite: Blue Jays, Spread: -1.5, Total: 7, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 10/16/2025: 8-2 TOR (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 10/15/2025: 13-4 TOR (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 10/13/2025: 10-3 SEA (Favorite: Blue Jays, Spread: -1.5, Total: 7, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 10/12/2025: 3-1 SEA (Favorite: Blue Jays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 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)

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!