Tigers vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for July 12

Odds updated as of 12:11 p.m.

In MLB action on Saturday, the Detroit Tigers face the Seattle Mariners.

We've got you covered, in terms of the most important information regarding this game before you take a look at the MLB odds and spreads on FanDuel Sportsbook.

Tigers vs Mariners Game Info

• Detroit Tigers (59-36) vs. Seattle Mariners (49-45)
• Date: Saturday, July 12, 2025
• Time: 1:10 p.m. ET
• Venue: Comerica Park -- Detroit, Michigan
• Coverage: MLB Network, FDSDET, and ROOT Sports NW

Tigers vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: DET: (-110) | SEA: (-106)
• Spread: DET: +1.5 (-192) | SEA: -1.5 (+158)
• Total: 8 -- Over: (-106) | Under: (-114)

Tigers vs Mariners Probable Starting Pitchers

Probable Pitchers: Casey Mize (Tigers) - 9-2, 2.63 ERA vs George Kirby (Mariners) - 3-4, 4.22 ERA

The Tigers will give the nod to Casey Mize (9-2, 2.63 ERA), who is eyeing win No. 10 on the season, and the Mariners will counter with George Kirby (3-4, 4.22 ERA). Mize and his team have a record of 9-6-0 against the spread when he starts. Mize's team is 8-2 this season when he starts and they are the moneyline favorite. The Mariners are 3-6-0 ATS in Kirby's nine starts with a set spread. The Mariners were named the moneyline underdog for two Kirby starts this season -- they split the games.

Tigers vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (50.1%)

Tigers vs Mariners Moneyline

• The moneyline numbers for Tigers vs. Mariners reveal Detroit as the favorite (-110) and Seattle as the underdog (-106) on the road.

Tigers vs Mariners Spread

• The Mariners are 1.5-run favorites against the spread for this matchup with the Tigers. The Mariners are +158 to cover, while the Tigers are -192 to cover as a 1.5-run underdog on the runline.

Tigers vs Mariners Over/Under

• A total of 8 runs has been set for the Tigers-Mariners contest on July 12, with the over available at -106 and the under at -114.

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

Tigers vs Mariners Betting Trends

• The Tigers have won in 39, or 66.1%, of the 59 contests they have been named as odds-on favorites in this year.
• This season Detroit has been victorious 39 times in 59 chances when named as a favorite of at least -110 on the moneyline.
• The Tigers and their opponents have gone over the total this season in 44 of their 90 opportunities.
• In 90 games with a line this season, the Tigers have a mark of 48-42-0 against the spread.
• The Mariners have been the moneyline underdog 30 total times this season. They've gone 14-16 in those games.
• Seattle is 14-15 (winning 48.3% of its games) when playing as a moneyline underdog of -106 or longer.
• In the 92 games oddsmakers have set an over/under for the Mariners, they have combined with opponents to go over the total 50 times (50-38-4).
• The Mariners have a 40-52-0 record ATS this season (covering 43.5% of the time).

Tigers Player Leaders

• Spencer Torkelson is hitting .235 with 20 doubles, 21 home runs and 42 walks. He has an on-base percentage of .334 and a slugging percentage of .495.
• Among all qualified hitters in the majors, he ranks 131st in batting average, 72nd in on-base percentage, and 26th in slugging.
• Gleyber Torres leads Detroit with an OBP of .383 this season while batting .271 with 51 walks and 49 runs scored. He's slugging .412.
• Among all qualifying batters, he is 58th in batting average, 11th in on-base percentage and 97th in slugging percentage.
• Riley Greene leads Detroit in slugging percentage (.529) and total hits (101) this season.
• Zach McKinstry has been key for Detroit with 81 hits, an OBP of .363 plus a slugging percentage of .468.
• McKinstry brings a two-game hitting streak into this game. In his last five games he is hitting .308 with two doubles, a home run, three walks and three RBIs.

Mariners Player Leaders

• Cal Raleigh is leading the Mariners with 90 hits. He's batting .264 and slugging .645 with an on-base percentage of .377.
• Including all qualified hitters in MLB, he ranks 69th in batting average, 17th in on-base percentage and second in slugging percentage.
• Julio Rodriguez has 15 doubles, three triples, 12 home runs and 25 walks while batting .244. He's slugging .392 with an on-base percentage of .302.
• Including all qualifying hitters, his batting average places him 117th, his on-base percentage ranks 125th, and he is 112th in slugging.
• J.P. Crawford has a .389 on-base percentage and a .385 slugging percentage, both team-best marks for the Mariners.
• Randy Arozarena is hitting .244 with 20 doubles, a triple, 15 home runs and 43 walks.

Tigers vs Mariners Head to Head

• 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)
• 8/8/2024: 4-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -205, Underdog Moneyline: +172)
• 8/7/2024: 6-2 DET (Favorite: Mariners, Spread: -1.5, Total: 6, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 8/6/2024: 4-2 DET (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -200, Underdog Moneyline: +168)

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