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

Odds updated as of 9:12 p.m.

The Seattle Mariners will face the Athletics in MLB action on Saturday.

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

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: (-174) | OAK: (+146)
• Spread: SEA: -1.5 (+122) | OAK: +1.5 (-146)
• Total: 7.5 -- Over: (-105) | Under: (-115)

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 probable pitchers are George Kirby (8-6) for the Mariners and Jeffrey Springs (10-8) for the Athletics. When Kirby starts, his team is 6-8-0 against the spread this season. Kirby's team has been victorious in 66.7% of the games he's started as the moneyline favorite with a record of 8-4. The Athletics have gone 13-11-0 ATS in Springs' 24 starts that had a set spread. The Athletics have a 10-6 record in Springs' 16 starts this season when they were the moneyline underdog.

Mariners vs Athletics Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (59.5%)

Mariners vs Athletics Moneyline

• The Mariners vs Athletics moneyline has the Mariners as a -174 favorite, while the Athletics are a +146 underdog on the road.

Mariners vs Athletics Spread

• The Mariners are 1.5-run favorites on the runline against the Athletics. The Mariners are +122 to cover, while the Athletics are -146 to cover.

Mariners vs Athletics Over/Under

• The over/under for the Mariners versus Athletics game on Aug. 23 has been set at 7.5, with -105 odds on the over and -115 odds on the under.

Bet on Seattle Mariners vs. Athletics on FanDuel today!

Mariners vs Athletics Betting Trends

• The Mariners have won in 48, or 57.1%, of the 84 contests they have been named as odds-on favorites in this year.
• This year, the Mariners have won 11 of 17 games when listed as at least -174 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 have posted a record of 52-72-0 against the spread this season.
• The Athletics have been the underdog on the moneyline 96 total times this season. They've finished 41-55 in those games.
• The Athletics have gone 8-19 when they have played as a moneyline underdog with odds of +146 or longer (29.6%).
• The Athletics have played in 129 games with a set over/under, and have combined with their opponents to go over the total 64 times (64-59-6).
• The Athletics have collected a 68-61-0 record ATS this season.

Mariners Player Leaders

• Cal Raleigh has 116 hits, which is best among Seattle hitters this season, while batting .246 with 66 extra-base hits. He has an on-base percentage of .353 and a slugging percentage of .585.
• Among all qualified hitters, he is 106th in batting average, his on-base percentage ranks 35th, and he is third in slugging.
• Julio Rodriguez leads Seattle in slugging percentage (.463) thanks to 53 extra-base hits. He's batting .261 with an on-base percentage of .314.
• He is 68th in batting average, 105th in on-base percentage and 51st in slugging among qualifying hitters.
• Josh Naylor is batting .282 with a .450 slugging percentage and 70 RBI this year.
• Eugenio Suarez has been key for Seattle with 110 hits, an OBP of .306 plus a slugging percentage of .548.
• Suarez enters this matchup on a three-game hitting streak. During his last five outings he is batting .316 with two doubles, two home runs and four RBIs.

Athletics Player Leaders

• Brent Rooker has a .498 slugging percentage, which paces the Athletics. He's batting .272 with an on-base percentage of .345.
• Including all the qualifying hitters in the majors, his batting average ranks 43rd, his on-base percentage ranks 47th, and he is 20th in slugging.
• Tyler Soderstrom's .346 OBP paces his team. He has a batting average of .273 while slugging .481.
• He is currently 41st in batting average, 45th in on-base percentage and 33rd in slugging percentage among all qualified hitters.
• Nick Kurtz is batting .312 with 23 doubles, two triples, 26 home runs and 49 walks.
• Shea Langeliers has collected 98 hits to pace 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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