Mariners vs Athletics Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 23

Odds updated as of 7:13 a.m.

On Saturday in MLB, the Seattle Mariners are playing the Athletics.

Here's what you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Athletics Game Info

• Seattle Mariners (69-60) vs. Athletics (59-71)
• Date: Saturday, August 23, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: ROOT Sports NW and NBCS-CA

Mariners vs Athletics Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-184) | OAK: (+154)
• Spread: SEA: -1.5 (+115) | OAK: +1.5 (-138)
• Total: 8 -- Over: (-110) | Under: (-110)

Mariners vs Athletics Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 8-6, 4.22 ERA vs Jeffrey Springs (Athletics) - 10-8, 4.37 ERA

The Mariners will call on George Kirby (8-6) against the Athletics and Jeffrey Springs (10-8). Kirby and his team are 6-8-0 ATS this season when he starts. Kirby's team has won 66.7% of his starts when they are favored on the moneyline (8-4). The Athletics have a 13-11-0 ATS record in Springs' 24 starts that had a set spread. The Athletics have been the underdog on the moneyline in 16 of Springs' starts this season, and they went 10-6 in those matchups.

Mariners vs Athletics Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (60.2%)

Mariners vs Athletics Moneyline

• The Mariners vs Athletics moneyline has the Mariners as a -184 favorite, while the Athletics are a +154 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 -138 to cover.

Mariners vs Athletics Over/Under

• A total of 8 runs has been set for the Mariners-Athletics game on Aug. 23, with the over available at -110 and the under at -110.

Bet on Seattle Mariners vs. Athletics on FanDuel today!

Mariners vs Athletics Betting Trends

• The Mariners have been victorious in 48, or 57.1%, of the 84 contests they have been chosen as favorites in this season.
• This season, the Mariners have come away with a win eight times in 11 chances when named as a favorite of at least -184 or better on the moneyline.
• The Mariners and their opponents have hit the over in 65 of their 124 games with a total this season.
• The Mariners are 52-72-0 against the spread in their 124 games that had a posted line this season.
• The Athletics have been the moneyline underdog 96 total times this season. They've gone 41-55 in those games.
• In games they have played as a moneyline underdog with odds of +154 or longer, the Athletics have gone 6-13 (31.6%).
• The Athletics have combined with their opponents to hit the over on the total 64 times this season for a 64-59-6 record against the over/under.
• The Athletics have covered 52.7% of their games this season, going 68-61-0 ATS.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 116 hits, batting .246 this season with 66 extra-base hits. He has an on-base percentage of .353 and a slugging percentage of .585.
• Among qualifying hitters, he is 107th in batting average, his on-base percentage ranks 35th, and he is third in slugging.
• Julio Rodriguez has hit 25 homers this season while driving in 71 runs. He's batting .261 this season and slugging .463 with an on-base percentage of .314.
• Among qualified hitters, he is 68th in batting average, 106th in on-base percentage and 51st in slugging percentage.
• Josh Naylor has 123 hits this season and has a slash line of .282/.346/.450.
• Eugenio Suarez has 40 home runs, 98 RBI and a batting average of .238 this season.
• Suarez brings a three-game hitting streak into this game. In his last five games he is batting .316 with two doubles, two home runs and four RBIs.

Athletics Player Leaders

• Brent Rooker has racked up a slugging percentage of .498, a team-high for the Athletics. He's batting .272 with an on-base percentage of .345.
• Including all the qualified players in the majors, his batting average puts him 44th, his on-base percentage ranks 48th, and he is 20th in slugging.
• Tyler Soderstrom has a .346 OBP to pace his team. He has a batting average of .273 while slugging .481.
• Including all qualifying hitters, his batting average places him 42nd, his on-base percentage is 46th, and he is 33rd in slugging.
• Nick Kurtz has 23 doubles, two triples, 26 home runs and 49 walks while hitting .312.
• Shea Langeliers' 98 hits lead his team.

Mariners vs Athletics Head to Head

• 8/22/2025: 3-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -215, Underdog Moneyline: +180)
• 7/30/2025: 5-4 OAK (Favorite: Mariners, Spread: -1.5, Total: 9.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 7/29/2025: 6-1 OAK (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 7/28/2025: 3-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 5/7/2025: 6-5 SEA (Favorite: Mariners, Spread: -1.5, Total: 9.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 5/6/2025: 5-3 SEA (Favorite: Athletics, Spread: -1.5, Total: 10, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 5/5/2025: 7-6 OAK (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 3/30/2025: 2-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -180, Underdog Moneyline: +152)
• 3/29/2025: 4-2 OAK (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 3/28/2025: 7-0 OAK (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -134, Underdog Moneyline: +114)

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