Mariners vs Blue Jays Prediction, Odds, Moneyline, Spread & Over/Under for ALCS Game 4 on Oct. 16

Odds updated as of 8:13 p.m.

The MLB schedule on Thursday includes the Seattle Mariners taking on the Toronto Blue Jays for Game 4 of the ALCS.

Here's everything you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Blue Jays Game Info

• Seattle Mariners (90-72) vs. Toronto Blue Jays (94-68)
• Date: Thursday, October 16, 2025
• Time: 8:33 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Fox Sports 1

Mariners vs Blue Jays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-132) | TOR: (+112)
• Spread: SEA: -1.5 (+168) | TOR: +1.5 (-205)
• Total: 7.5 -- Over: (-114) | Under: (-106)

Mariners vs Blue Jays Probable Starting Pitchers

Probable Pitchers: Luis Castillo (Mariners) - 11-8, 3.54 ERA vs Max Scherzer (Blue Jays) - 5-5, 5.19 ERA

The probable pitchers are Luis Castillo (11-8, 3.54 ERA) for the Mariners and Max Scherzer (5-5, 5.19 ERA) for the Blue Jays. Castillo's team is 16-17-0 against the spread in his starts this season. Castillo's team has been victorious in 60% of the games he's started as the moneyline favorite with a record of 15-10. When Scherzer starts, the Blue Jays have gone 9-8-0 against the spread. The Blue Jays have been the underdog on the moneyline in eight of Scherzer's starts this season, and they went 3-5 in those matchups.

Mariners vs Blue Jays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (54.7%)

Mariners vs Blue Jays Moneyline

• Toronto is the underdog, +112 on the moneyline, while Seattle is a -132 favorite at home.

Mariners vs Blue Jays Spread

• The Blue Jays are +1.5 on the run line against the Mariners. The Blue Jays are -205 to cover, and the Mariners are +168.

Mariners vs Blue Jays Over/Under

• The over/under for the Mariners versus Blue Jays contest on Oct. 16 has been set at 7.5, with -114 odds on the over and -106 odds on the under.

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

Mariners vs Blue Jays Betting Trends

• The Mariners have been chosen as favorites in 113 games this year and have walked away with the win 66 times (58.4%) in those games.
• This season Seattle has been victorious 48 times in 74 chances when named as a favorite of at least -132 on the moneyline.
• The Mariners and their opponents have hit the over in 88 of their 164 games with a total set by oddsmakers this season.
• The Mariners have posted a record of 74-90-0 against the spread this season.
• The Blue Jays have put together a 44-34 record in games they were listed as the moneyline underdog (winning 56.4% of those games).
• Toronto has a record of 17-16 when it has played as a moneyline underdog with odds of +112 or longer (51.5%).
• The Blue Jays have played in 167 games with an over/under set, and have combined with their opponents to go over the total 91 times (91-70-6).
• The Blue Jays have collected a 95-72-0 record ATS this season (covering 56.9% of the time).

Mariners Player Leaders

• Cal Raleigh leads Seattle in OBP (.359) and total hits (147) this season. He's batting .247 batting average while slugging .589.
• He ranks 98th in batting average, 20th in on-base percentage, and third in slugging among all qualified hitters in the majors.
• Julio Rodriguez has hit 32 homers this season while driving in 95 runs. He's batting .267 this season and slugging .474 with an on-base percentage of .324.
• Among qualified batters, his batting average places him 44th, his on-base percentage 88th, and his slugging percentage 38th.
• Rodriguez enters this game looking to extend his three-game hit streak. During his last five outings he is batting .211 with two home runs, five walks and five RBIs.
• Josh Naylor has 160 hits this season and has a slash line of .295/.353/.462.
• Eugenio Suarez has been key for Seattle with 134 hits, an OBP of .298 plus a slugging percentage of .526.
• Suarez brings a three-game hitting streak into this game. During his last five outings he is batting .182 with a double and a walk.

Blue Jays Player Leaders

• Vladimir Guerrero Jr. is batting .292 with 34 doubles, 23 home runs and 81 walks. He's slugging .467 with an on-base percentage of .381.
• Including all qualified hitters in the majors, his batting average places him 12th, his on-base percentage is sixth, and he is 41st in slugging.
• George Springer's 153 hits and .397 on-base percentage both pace his team. He has a batting average of .307 while slugging .556.
• He is fourth in batting average, second in on-base percentage and fifth in slugging percentage in the majors.
• Ernie Clement is hitting .277 with 35 doubles, two triples, nine home runs and 27 walks.
• Alejandro Kirk has 18 doubles, 15 home runs and 48 walks while hitting .282.

Mariners vs Blue Jays Head to Head

• 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)
• 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)

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