Mariners vs Athletics Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 5

Odds updated as of 4:12 a.m.

In MLB action on Saturday, the Seattle Mariners play the Athletics.

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

Mariners vs Athletics Game Info

• Seattle Mariners (66-76) vs. Athletics (56-86)
• Date: Saturday, September 5, 2026
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and NBCS-CA

Mariners vs Athletics Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-255) | OAK: (+210)
• Spread: SEA: -1.5 (-115) | OAK: +1.5 (-104)
• Total: 7.5 -- Over: (-122) | Under: (+100)

Mariners vs Athletics Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 9-10, 4.19 ERA vs Jeffrey Springs (Athletics) - 3-13, 6.37 ERA

The Mariners will give the ball to George Kirby (9-10, 4.19 ERA), who is eyeing win No. 10 on the season, and the Athletics will counter with Jeffrey Springs (3-13, 6.37 ERA). Kirby's team is 9-17-0 against the spread this season in his starts. Kirby's team is 12-11 this season when he starts and they are the moneyline favorite. The Athletics are 10-15-0 against the spread when Springs starts. The Athletics have been the underdog on the moneyline in 18 of Springs' starts this season, and they went 5-13 in those games.

Mariners vs Athletics Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (60%)

Mariners vs Athletics Moneyline

• The Mariners vs Athletics moneyline has the Mariners as a -255 favorite, while the Athletics are a +210 underdog on the road.

Mariners vs Athletics Spread

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

Mariners vs Athletics Over/Under

• Mariners versus Athletics on Sept. 5 has an over/under of 7.5 runs, with the odds on the over -122 and the under set at +100.

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Mariners vs Athletics Betting Trends

• The Mariners have been victorious in 52, or 49.5%, of the 105 contests they have been chosen as favorites in this season.
• The Mariners have yet to enter a game this year with shorter moneyline odds than -255.
• The Mariners and their opponents have hit the over in 73 of their 140 games with a total this season.
• In 140 games with a line this season, the Mariners have a mark of 52-88-0 against the spread.
• The Athletics have been the underdog on the moneyline 105 total times this season. They've gone 40-65 in those games.
• In games they have played as a moneyline underdog with odds of +210 or longer, the Athletics have gone 2-1 (66.7%).
• The Athletics have combined with their opponents to go over the total 73 times this season for a 73-67-2 record against the over/under.
• The Athletics have put together a 66-76-0 record against the spread this season.

Mariners Player Leaders

• Randy Arozarena leads Seattle with an OBP of .370 this season while batting .273 with 57 walks and 91 runs scored. He has a slugging percentage of .467.
• Among qualifying hitters in baseball, he ranks 36th in batting average, 16th in on-base percentage, and 36th in slugging.
• Josh Naylor leads Seattle in slugging percentage (.361) thanks to 29 extra-base hits. He's batting .265 with an on-base percentage of .324.
• He is 53rd in batting average, 84th in on-base percentage and 124th in slugging in the major leagues.
• Julio Rodriguez is batting .245 with a .402 slugging percentage and 60 RBI this year.
• Cole Young is batting .246 with a .309 OBP and 57 RBI for Seattle this season.
• Young enters this matchup on a two-game hitting streak. In his last five games he is hitting .211 with two walks.

Athletics Player Leaders

• Jeff McNeil has a .371 slugging percentage, which paces the Athletics. He's batting .270 with an on-base percentage of .320.
• Including all qualified hitters in the big leagues, he is 44th in batting average, 89th in on-base percentage and 116th in slugging percentage.
• McNeil hopes to build on a four-game hitting streak in this matchup. During his last five outings he is batting .318 with two doubles, a home run, a walk and four RBIs.
• Lawrence Butler is hitting .233 with 16 doubles, a triple, 12 home runs and 55 walks. He's slugging .371 with an on-base percentage of .327.
• He is 111th in batting average, 78th in on-base percentage and 116th in slugging percentage in the majors.
• Zack Gelof is batting .258 with 14 doubles, a triple, 16 home runs and 26 walks.
• Jonah Heim is batting .218 with 17 doubles, 13 home runs and 24 walks.

Mariners vs Athletics Head to Head

• 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)
• 4/20/2026: 6-4 OAK (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 8/24/2025: 11-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -180, Underdog Moneyline: +152)
• 8/23/2025: 2-1 OAK (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -172, Underdog Moneyline: +144)

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