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

Odds updated as of 7:12 a.m.

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

Before you do any MLB betting on this matchup at FanDuel Sportsbook, here's everything you need to know.

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: (-138) | TOR: (+118)
• Spread: SEA: -1.5 (+158) | TOR: +1.5 (-192)
• Total: 7.5 -- Over: (-115) | Under: (-105)

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 Mariners will call on Luis Castillo (11-8, 3.54 ERA) versus the Blue Jays and Max Scherzer (5-5, 5.19 ERA). When Castillo starts, his team is 16-17-0 against the spread 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. The Blue Jays are 9-8-0 ATS in Scherzer's 17 starts with a set spread. The Blue Jays have been the moneyline underdog in eight of Scherzer's starts this season, and they went 3-5 in those games.

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

• Looking at the moneyline for Mariners-Blue Jays, Seattle is the favorite at -138, and Toronto is +118 playing on the road.

Mariners vs Blue Jays Spread

• The Blue Jays are +1.5 on the run line against the Mariners. The Blue Jays are -192 to cover, and the Mariners are +158.

Mariners vs Blue Jays Over/Under

• The over/under for Mariners-Blue Jays on Oct. 16 is 7.5. The over is -115, and the under is -105.

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

Mariners vs Blue Jays Betting Trends

• The Mariners have been victorious in 66, or 58.4%, of the 113 contests they have been chosen as favorites in this season.
• This season Seattle has come away with a win 41 times in 63 chances when named as a favorite of at least -138 on the moneyline.
• Contests with the Mariners have gone over the total set by oddsmakers in 88 of 164 chances this season.
• The Mariners have posted a record of 74-90-0 against the spread this season.
• The Blue Jays have been the underdog on the moneyline 78 total times this season. They've finished 44-34 in those games.
• When it has played as a moneyline underdog with odds of +118 or longer, Toronto has a 10-10 record (winning 50% of its games).
• The Blue Jays have combined with opponents to hit the over on the total 91 times this season for a 91-70-6 record against the over/under.
• The Blue Jays have covered 56.9% of their games this season, going 95-72-0 against the spread.

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.
• Among qualified batters in the majors, his batting average ranks 98th, his on-base percentage ranks 20th, and he is third in slugging.
• Julio Rodriguez leads Seattle in slugging percentage (.474) thanks to 67 extra-base hits. He's batting .267 with an on-base percentage of .324.
• Among all qualified hitters, he is 44th in batting average, 88th in on-base percentage and 38th in slugging percentage.
• Rodriguez takes a three-game streak with at least one hit into this contest. In his last five games he is hitting .211 with two home runs, five walks and five RBIs.
• Josh Naylor is batting .295 with a .462 slugging percentage and 92 RBI this year.
• Eugenio Suarez is batting .228 with a .298 OBP and 118 RBI for Seattle this season.
• Suarez heads into this game on a three-game hitting streak. During his last five outings he is batting .182 with a double and a walk.

Blue Jays Player Leaders

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

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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