Mariners vs Athletics Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 12

Odds updated as of 4:12 a.m.

The MLB slate on Saturday includes the Seattle Mariners taking on the Athletics.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the most important information about this game.

Mariners vs Athletics Game Info

• Seattle Mariners (69-79) vs. Athletics (60-88)
• Date: Saturday, September 12, 2026
• Time: 9:40 p.m. ET
• Venue: Sutter Health Park -- West Sacramento, California
• Coverage: NBCS-CA and Mariners.TV

Mariners vs Athletics Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-180) | OAK: (+152)
• Spread: SEA: -1.5 (-120) | OAK: +1.5 (+100)
• Total: 9.5 -- Over: (-110) | Under: (-110)

Mariners vs Athletics Probable Starting Pitchers

Probable Pitchers: Bryan Woo (Mariners) - 11-9, 4.03 ERA vs Gage Jump (Athletics) - 6-10, 5.12 ERA

The probable pitchers are Bryan Woo (11-9) for the Mariners and Gage Jump (6-10) for the Athletics. Woo's team is 13-14-0 against the spread in his starts this season. Woo's team has won 60% of his starts when they are favored on the moneyline (12-8). The Athletics are 10-9-0 against the spread when Jump starts. The Athletics are 5-8 in Jump's 13 starts this season that they were the underdog on the moneyline.

Mariners vs Athletics Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (52.6%)

Mariners vs Athletics Moneyline

• The Mariners vs Athletics moneyline has the Mariners as a -180 favorite, while the Athletics are a +152 underdog at home.

Mariners vs Athletics Spread

• The Mariners are 1.5-run favorites on the runline against the Athletics. The Mariners are -120 to cover, while the Athletics are +100 to cover.

Mariners vs Athletics Over/Under

• A total of 9.5 runs has been set for the Mariners-Athletics game on Sept. 12, with the over available at -110 and the under at -110.

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Mariners vs Athletics Betting Trends

• The Mariners have won in 55, or 49.5%, of the 111 contests they have been named as odds-on favorites in this year.
• This year, the Mariners have won eight of 13 games when listed as at least -180 or better on the moneyline.
• The Mariners and their opponents have hit the over in 77 of their 146 games with a total this season.
• The Mariners are 54-92-0 against the spread in their 146 games that had a posted line this season.
• The Athletics have won 44 of the 111 games they were the underdog on the moneyline this season (39.6%).
• The Athletics have a record of 10-18 when playing as a moneyline underdog with odds of +152 or longer (35.7%).
• The Athletics have combined with their opponents to go over the total 76 times this season for a 76-70-2 record against the over/under.
• The Athletics have covered 47.3% of their games this season, going 70-78-0 ATS.

Mariners Player Leaders

• Randy Arozarena has 141 hits this season and a team-best OBP of .371. He has a .272 batting average and a slugging percentage of .459.
• Among qualifying batters in baseball, he ranks 34th in batting average, 13th in on-base percentage, and 40th in slugging.
• Josh Naylor leads Seattle in slugging percentage (.359) thanks to 30 extra-base hits. He's batting .267 with an on-base percentage of .323.
• His batting average ranks 48th among qualified players, his on-base percentage 78th, and his slugging percentage 126th.
• Cole Young has 132 hits this season and has a slash line of .248/.311/.386.
• Young brings a four-game hitting streak into this game. During his last five outings he is hitting .313 with a double, a triple, a walk and two RBIs.
• Julio Rodriguez is batting .239 with a .299 OBP and 65 RBI for Seattle this season.
• Rodriguez brings a three-game hitting streak into this game. During his last five outings he is hitting .211 with a home run, a walk and four RBIs.

Athletics Player Leaders

• Jeff McNeil has a .319 on-base percentage and a .374 slugging percentage, both team-high numbers for the Athletics. He's batting .270.
• Including all the qualified hitters in the big leagues, he is 41st in batting average, 86th in on-base percentage and 117th in slugging percentage.
• McNeil brings a three-game hitting streak into this matchup. During his last five outings he is hitting .238 with a double, a walk and two RBIs.
• Zack Gelof is batting .251 with 15 doubles, two triples, 17 home runs and 27 walks. He's slugging .455 with an on-base percentage of .315.
• Lawrence Butler has racked up a team-high OBP (.319), and paces the Athletics in hits (96).
• Carlos Cortes is batting .260 with 15 doubles, a triple, nine home runs and 29 walks.

Mariners vs Athletics Head to Head

• 9/11/2026: 6-5 OAK (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 9/6/2026: 2-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -215, Underdog Moneyline: +180)
• 9/5/2026: 6-2 OAK (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -245, Underdog Moneyline: +200)
• 9/4/2026: 7-6 OAK (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -235, Underdog Moneyline: +194)
• 9/3/2026: 7-4 OAK (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -205, Underdog Moneyline: +172)
• 5/27/2026: 9-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 5/26/2026: 4-1 SEA (Favorite: Athletics, Spread: -1.5, Total: 9.5, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 5/25/2026: 9-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 4/22/2026: 5-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 4/21/2026: 5-2 OAK (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -166, Underdog Moneyline: +140)

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