Mariners vs Athletics Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 13

Odds updated as of 3:12 p.m.

The Sunday slate in MLB includes a matchup between the Seattle Mariners and the Athletics.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital info about this matchup.

Mariners vs Athletics Game Info

• Seattle Mariners (70-79) vs. Athletics (60-89)
• Date: Sunday, September 13, 2026
• Time: 4:05 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: (-162) | OAK: (+136)
• Spread: SEA: -1.5 (-104) | OAK: +1.5 (-115)
• Total: 9.5 -- Over: (-110) | Under: (-110)

Mariners vs Athletics Probable Starting Pitchers

Probable Pitchers: Bryce Miller (Mariners) - 4-9, 4.22 ERA vs Jacob Lopez (Athletics) - 6-4, 4.78 ERA

The probable starters are Bryce Miller (4-9) for the Mariners and Jacob Lopez (6-4) for the Athletics. Miller and his team are 2-15-0 ATS this season when he starts. Miller's team has won 23.1% of his starts when they are favored on the moneyline (3-10). The Athletics are 12-9-0 ATS in Lopez's 21 starts with a set spread. The Athletics have been the moneyline underdog in 19 of Lopez's starts this season, and they went 10-9 in those games.

Mariners vs Athletics Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Athletics win (51.1%)

Mariners vs Athletics Moneyline

• The Mariners vs Athletics moneyline has the Mariners as a -162 favorite, while the Athletics are a +136 underdog at home.

Mariners vs Athletics Spread

• The Mariners are 1.5-run favorites on the runline against the Athletics. The Mariners are -104 to cover, while the Athletics are -115 to cover.

Mariners vs Athletics Over/Under

• The over/under for Mariners-Athletics on Sept. 13 is 9.5. The over is -110, and the under is -110.

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Mariners vs Athletics Betting Trends

• The Mariners have been victorious in 56, or 50%, of the 112 contests they have been chosen as favorites in this season.
• This season, the Mariners have come away with a win 14 times in 25 chances when named as a favorite of at least -162 or better on the moneyline.
• The Mariners and their opponents have hit the over in 78 of their 147 games with a total this season.
• The Mariners are 55-92-0 against the spread in their 147 games that had a posted line this season.
• The Athletics have won 39.3% of the games this season they were the underdog on the moneyline (44-68).
• When they have played as a moneyline underdog with odds of +136 or longer, the Athletics have a record of 16-29 (35.6%).
• The Athletics have combined with their opponents to go over the total 77 times this season for a 77-70-2 record against the over/under.
• The Athletics have a 70-79-0 record against the spread this season (covering 47% of the time).

Mariners Player Leaders

• Randy Arozarena leads Seattle with an OBP of .371 this season while batting .273 with 61 walks and 97 runs scored. He has a slugging percentage of .464.
• Among all qualifying hitters in baseball, he is 33rd in batting average, 13th in on-base percentage, and 35th in slugging.
• Arozarena has hit safely in two straight games. In his last five games he is hitting .263 with a double, a home run, two walks and five RBIs.
• Josh Naylor leads Seattle in slugging percentage (.363) thanks to 31 extra-base hits. He's batting .270 with an on-base percentage of .325.
• Among all qualifying players, he ranks 42nd in batting average, 75th in on-base percentage and 121st in slugging percentage.
• Naylor heads into this game looking to extend his two-game hit streak. During his last five outings he is hitting .333 with a double and an RBI.
• Cole Young is batting .250 with a .393 slugging percentage and 65 RBI this year.
• Young heads into this matchup with five games in a row with at least one hit. During his last five outings he is hitting .400 with a double, a triple, a home run and seven RBIs.
• Julio Rodriguez has been key for Seattle with 133 hits, an OBP of .303 plus a slugging percentage of .398.
• Rodriguez has safely hit in four games in a row. During his last five outings he is batting .300 with a double, a home run, two walks and four RBIs.

Athletics Player Leaders

• Jeff McNeil has a team-best slugging percentage (.372) and leads the Athletics in hits (116). He's batting .268 and with an on-base percentage of .317.
• He is 47th in batting average, 93rd in on-base percentage and 115th in slugging percentage among all qualified hitters in the majors.
• Shea Langeliers has 19 doubles, 23 home runs and 34 walks while batting .264. He's slugging .496 with an on-base percentage of .332.
• Zack Gelof is batting .249 with 15 doubles, two triples, 17 home runs and 27 walks.
• Lawrence Butler has racked up 96 hits with a .318 OBP to lead his team in both.

Mariners vs Athletics Head to Head

• 9/12/2026: 19-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 9.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 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)

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