Tigers vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for ALDS Game 3 on Oct. 8

Odds updated as of 2:13 p.m.

On Wednesday in the MLB, the Detroit Tigers are playing the Seattle Mariners in Game 4 of the ALDS.

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

Tigers vs Mariners Game Info

• Detroit Tigers (87-75) vs. Seattle Mariners (90-72)
• Date: Wednesday, October 8, 2025
• Time: 3:08 p.m. ET
• Venue: Comerica Park -- Detroit, Michigan
• Coverage: Fox Sports 1

Tigers vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: DET: (-108) | SEA: (-108)
• Spread: DET: +1.5 (-194) | SEA: -1.5 (+158)
• Total: 8.5 -- Over: (-108) | Under: (-112)

Tigers vs Mariners Probable Starting Pitchers

Probable Pitchers: Casey Mize (Tigers) - 14-6, 3.87 ERA vs Bryce Miller (Mariners) - 4-6, 5.68 ERA

The Tigers will look to Casey Mize (14-6, 3.87 ERA) versus the Mariners and Bryce Miller (4-6, 5.68 ERA). Mize and his team are 16-12-0 ATS this season when he starts. When Mize starts a game and his team is the favorite on the moneyline, they have a record of 12-6. The Mariners have a 7-11-0 record against the spread in Miller's starts. The Mariners have been the underdog on the moneyline in seven of Miller's starts this season, and they went 2-5 in those games.

Tigers vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Tigers win (54.5%)

Tigers vs Mariners Moneyline

• Detroit is the favorite, -108 on the moneyline, while Seattle is a -108 underdog on the road.

Tigers vs Mariners Spread

Tigers vs Mariners Over/Under

• Tigers versus Mariners on Oct. 8 has an over/under of 8.5 runs, with the odds on the over -108 and the under set at -112.

Bet on Detroit Tigers vs. Seattle Mariners on FanDuel today!

Tigers vs Mariners Betting Trends

• The Tigers have been chosen as favorites in 107 games this year and have walked away with the win 59 times (55.1%) in those games.
• This season Detroit has come away with a win 62 times in 113 chances when named as a favorite of at least -108 on the moneyline.
• The Tigers and their opponents have gone over the total this season in 79 of their 160 opportunities.
• The Tigers have posted a record of 73-87-0 against the spread this season.
• The Mariners have a 19-22 record in games they were the underdog on the moneyline (winning 46.3% of those games).
• When it has played as a moneyline underdog with odds of -108 or longer, Seattle has gone 19-22 (46.3%).
• The Mariners have played in 159 games with an over/under set, and have combined with their opponents to go over the total 85 times (85-69-5).
• The Mariners have a 71-88-0 record ATS this season (covering 44.7% of the time).

Tigers Player Leaders

• Gleyber Torres has 136 hits this season and a team-best OBP of .358. He has a .256 batting average and a slugging percentage of .387.
• Among all qualified batters in the majors, he ranks 77th in batting average, 23rd in on-base percentage, and 118th in slugging.
• Torres will look for his sixth straight game with a hit in this matchup. In his last five games he is hitting .286 with two doubles and a walk.
• Riley Greene has 155 hits to go with a slugging percentage of .493, both of which are tops among Detroit hitters this season. He's batting .258 with an on-base percentage of .313.
• He is 69th in batting average, 104th in on-base percentage and 21st in slugging among qualifying batters.
• Spencer Torkelson is batting .240 with a .456 slugging percentage and 78 RBI this year.
• Torkelson has logged a hit or more in two games in a row. In his last five games he is hitting .158 with two doubles, three walks and five RBIs.
• Zach McKinstry has been key for Detroit with 117 hits, an OBP of .333 plus a slugging percentage of .438.

Mariners Player Leaders

• Cal Raleigh has totaled 147 hits with a .359 on-base percentage, leading the Mariners in both statistics. He's batting .247 and slugging .589.
• Including all qualifying hitters in MLB, he is 98th in batting average, 20th in on-base percentage and third in slugging percentage.
• Raleigh heads into this game on a four-game hitting streak. During his last five outings he is batting .350 with a double, a home run, two walks and three 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 is currently 44th in batting average, 88th in on-base percentage and 38th in slugging percentage among all qualified hitters.
• Josh Naylor has 29 doubles, a triple, 20 home runs and 48 walks while batting .295.
• Eugenio Suarez is hitting .228 with 28 doubles, 49 home runs and 46 walks.

Tigers vs Mariners Head to Head

• 10/5/2025: 3-2 SEA (Favorite: Tigers, Spread: -1.5, Total: 5.5, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 10/4/2025: 3-2 DET (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 7/13/2025: 8-4 SEA (Favorite: Tigers, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 7/11/2025: 12-3 SEA (Favorite: Tigers, Spread: -1.5, Total: 7, Favorite Moneyline: -290, Underdog Moneyline: +235)
• 4/2/2025: 3-2 SEA (Favorite: Tigers, Spread: -1.5, Total: 6.5, Favorite Moneyline: -124, Underdog Moneyline: +106)
• 4/1/2025: 4-1 DET (Favorite: Mariners, Spread: -1.5, Total: 6.5, Favorite Moneyline: -178, Underdog Moneyline: +150)
• 3/31/2025: 9-6 DET (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 8/15/2024: 2-1 DET (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 8/14/2024: 3-2 DET (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 8/13/2024: 15-1 DET (Favorite: Tigers, Spread: -1.5, Total: 6.5, Favorite Moneyline: -126, Underdog Moneyline: +108)

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!