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

Odds updated as of 9:12 a.m.

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

We've got you covered, in terms of the most important information regarding this matchup before you take a look at the 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 (+112) | OAK: +1.5 (-134)
• 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 look to George Kirby (8-6) versus the Athletics and Jeffrey Springs (10-8). Kirby's team is 6-8-0 against the spread this season in his 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 are 10-6 in Springs' 16 starts this season that 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 -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 +112 to cover, while the Athletics are -134 to cover.

Mariners vs Athletics Over/Under

• A combined run total of 8 has been set for Mariners-Athletics on Aug. 23, with the over 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 favorites in 84 games this season and have come away with the win 48 times (57.1%) in those contests.
• This year, the Mariners have won eight of 11 games when listed as 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.
• In 124 games with a line this season, the Mariners have a mark of 52-72-0 against the spread.
• The Athletics have compiled a 41-55 record in games they were the underdog on the moneyline (winning 42.7% of those games).
• The Athletics have gone 6-13 in games they have played as a moneyline underdog with odds of +154 or longer (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 are 68-61-0 ATS this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle in total hits (116) 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 qualifying batters in baseball, he is 107th in batting average, 35th in on-base percentage, and 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 qualifying hitters, his batting average ranks him 68th, his on-base percentage 106th, and his slugging percentage 51st.
• Josh Naylor is batting .282 with a .450 slugging percentage and 70 RBI this year.
• Eugenio Suarez is batting .238 with a .306 OBP and 98 RBI for Seattle this season.
• Suarez has safely hit in three straight games. In his last five games he is hitting .316 with two doubles, two home runs and four RBIs.

Athletics Player Leaders

• Brent Rooker has a .498 slugging percentage, which leads the Athletics. He's batting .272 with an on-base percentage of .345.
• Including all the qualified hitters in the big leagues, he ranks 44th in batting average, 48th in on-base percentage and 20th in slugging percentage.
• Tyler Soderstrom's .346 on-base percentage leads his team. He has a batting average of .273 while slugging .481.
• Including all qualified hitters, he is 42nd in batting average, 46th in on-base percentage and 33rd in slugging percentage.
• Nick Kurtz has 23 doubles, two triples, 26 home runs and 49 walks while hitting .312.
• Shea Langeliers leads his team with 98 hits.

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)

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!