The Detroit Tigers host the Seattle Mariners on October 8, 2025. First pitch from Comerica Park is scheduled for 3:08 p.m. EDT; the game will be broadcast on Fox Sports 1.
Find my MLB betting preview and Mariners vs Tigers prediction below, as well as probable pitchers, betting trends, injury reports and more.
My Mariners vs Tigers Prediction
- Mariners vs Tigers picks: Tigers ML (play to -140)
My Mariners vs Tigers best bet is on the Tigers moneyline. Make sure to find the best odds by checking our live MLB odds page.
Mariners vs Tigers Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -210 | 8.5 -105o / -115u | -110 |
| Tigers Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +175 | 8.5 -105o / -115u | -110 |
Mariners vs Tigers Projected Starting Pitchers
| RHP Bryce Miller (SEA) | Stat | RHP Casey Mize (DET) |
|---|---|---|
| 4-6 | W-L | 14-6 |
| 0.0 | fWAR (FanGraphs) | 2.4 |
| 5.68 / 5.32 | ERA /xERA | 3.87 / 3.70 |
| 5.17 / 4.60 | FIP / xFIP | 3.89 / 3.90 |
| 1.41 | WHIP | 1.27 |
| 2.2 | K-BB% | 3.9 |
| 37.9 | GB% | 38.7 |
| 102 | Stuff+ | 96 |
| 97 | Location+ | 107 |
Sean Paul's Mariners vs Tigers Preview
Seattle Mariners Betting Preview: Relying on Power
The leash on Bryce Miller will be short. He’s been the worst regular Mariners rotation member, posting a 5.68 ERA with 5.32 xERA and a 5.17 FIP. Entering the year, Miller appeared like a stalwart for Seattle’s rotation, but he’s a total liability at this point.
Miller surrendered 3+ runs in six of his last eight outings — and four runs in four of them. What the Mariners won't allow to happen in this game is a start where Miller gives up 4+ runs. He'll be pulled before that.
Seattle led the league with a 129 wRC+ in September. The Mariners experienced a significant power surge, hitting a league-best 43 home runs. That output did not translate to the postseason during the first two games — besides Jorge Polanco taking Tarik Skubal deep twice, no other Mariner hit a homer in those games.
Given that Seattle had sold out for a more home-run or bust approach with Cal Raleigh’s mammoth power and Eugenio Suarez’s reliance on the three true outcomes, they need that power. Both of those two went deep in Game 3, and the Mariners scored eight runs. That's no coincidence.
The Mariners put the ball in play and made Jack Flaherty work in Game 3. It'll need to do more of the same in Game 4, but cracking Casey Mize is tougher than Flaherty.
Detroit Tigers Betting Preview: Offense Could Wake Up Against Miller
I trust Mize to have a strong outing when Detroit needs it most. A.J. Hinch gave Mize a very short leash in his last outing, tossing three innings with one earned run against Cleveland. However, his leash could be a bit bigger this time after Flaherty's poor outing yesterday.
Mize posted a career-best season with a 3.87 ERA, a 3.70 xERA, and a 3.89 FIP. That might not sound great, but for a pitcher who sits in the middle of a rotation for a playoff team, it's more than enough.
A pure strike-thrower, Mize ranked in the 87th percentile in walk rate this season. Nothing about his arsenal will blow opponents away, but his sinker and splitter combo can keep an opposing lineup off-balance.
The Tigers have enjoyed the occasional solid offensive moment in this ALDS. They just haven't hit well consistently enough. Everything Detroit does offensively centers around Kerry Carpenter and Riley Greene. With Miller on the mound, both left-handed hitters will get at least one or two chances against a righty before Dan Wilson tries to flip the advantage with one of his lefty relievers.
I don't love Detroit's offense and how it finished the year. The Tigers finished September with the 23rd-best wRC+ for the month with a brutal 26% strikeout rate. However, they also boasted a 9% walk rate to make up for the strikeout issues. That could prove pivotal versus Miller.
Yesterday, they did almost nothing offensively until the ninth inning, when the game was basically out of reach. But their late surge forced the Mariners to use Andres Munoz, who pitched in each of the first three games. Perhaps he could wear down a bit the longer this series goes.
Meanwhile, the silver lining in the Tigers' loss was a rest for their main bullpen cogs. Neither Will Vest nor Kyle Finnegan entered this game, so each could pitch a couple of innings in a do-or-die spot.
Mariners vs Tigers Prediction, Betting Analysis
I see this series going to a deciding game. The Tigers have a pretty notable pitching advantage with Mize against Miller, and he should do well in limiting Seattle's power output.
Give me the home team.
Pick: Tigers ML (-110, bet365 | Play to -140)
Moneyline
As mentioned, I'm backing the Tigers to extend this series.
Run Line (Spread)
I'm not interested in the run line for this game.
Over/Under
I have no play for the total.
Mariners vs Tigers Betting Trends
