Mariners vs Rays Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 3

Odds updated as of 7:11 p.m.

The Wednesday schedule in MLB includes a matchup between the Seattle Mariners and the Tampa Bay Rays.

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

Mariners vs Rays Game Info

• Seattle Mariners (73-66) vs. Tampa Bay Rays (69-69)
• Date: Wednesday, September 3, 2025
• Time: 7:35 p.m. ET
• Venue: George M. Steinbrenner Field -- Tampa, Florida
• Coverage: FDSSUN and ROOT Sports NW

Mariners vs Rays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-130) | TB: (+110)
• Spread: SEA: -1.5 (+130) | TB: +1.5 (-156)
• Total: 8.5 -- Over: (-110) | Under: (-110)

Mariners vs Rays Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 8-6, 3.94 ERA vs Adrian Houser (Rays) - 7-4, 2.85 ERA

The probable starters are George Kirby (8-6) for the Mariners and Adrian Houser (7-4) for the Rays. When Kirby starts, his team is 6-10-0 against the spread this season. When Kirby starts a game and his team is the favorite on the moneyline, they have a record of 8-6. The Rays have a 10-5-0 record against the spread in Houser's starts. The Rays are 6-5 in Houser's 11 starts this season that they were the moneyline underdog.

Mariners vs Rays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (56.9%)

Mariners vs Rays Moneyline

• Tampa Bay is a +110 underdog on the moneyline, while Seattle is a -130 favorite on the road.

Mariners vs Rays Spread

• The Rays are +1.5 on the spread (-156 to cover), and Seattle is +130 to cover the runline.

Mariners vs Rays Over/Under

• A combined run total of 8.5 has been set for Mariners-Rays on Sept. 3, with the over at -110 and the under at -110.

Bet on Seattle Mariners vs. Tampa Bay Rays on FanDuel today!

Mariners vs Rays Betting Trends

• The Mariners have won in 52, or 55.3%, of the 94 contests they have been named as odds-on favorites in this year.
• This season Seattle has come away with a win 41 times in 66 chances when named as a favorite of at least -130 on the moneyline.
• The Mariners' games have gone over the total in 71 of their 134 opportunities.
• The Mariners have posted a record of 56-78-0 against the spread this season.
• The Rays have won 27 of the 66 games they were the moneyline underdog this season (40.9%).
• Tampa Bay has a record of 15-16 when playing as a moneyline underdog with odds of +110 or longer (48.4%).
• The Rays have combined with opponents to hit the over on the total 57 times this season for a 57-69-7 record against the over/under.
• The Rays are 59-74-0 ATS this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 123 hits, batting .242 this season with 70 extra-base hits. He has an on-base percentage of .352 and a slugging percentage of .581.
• Among all qualified hitters, he ranks 119th in batting average, his on-base percentage ranks 40th, and he is third in slugging.
• Raleigh will look for his third straight game with a hit in this matchup. In his last five games he is batting .188 with a home run, four walks and an RBI.
• Julio Rodriguez has an OPS of .779, fueled by an OBP of .316 and a team-best slugging percentage of .463 this season. He's batting .264.
• Among all qualifying players, he ranks 63rd in batting average, 105th in on-base percentage and 51st in slugging percentage.
• Eugenio Suarez has collected 118 base hits, an OBP of .309 and a slugging percentage of .542 this season.
• Suarez has recorded at least one base hit in three straight games. During his last five outings he is hitting .263 with two doubles, a walk and an RBI.
• Josh Naylor has 16 home runs, 73 RBI and a batting average of .281 this season.

Rays Player Leaders

• Junior Caminero paces the Rays with 136 hits. He's batting .262 and slugging .539 with an on-base percentage of .304.
• He ranks 67th in batting average, 125th in on-base percentage and 10th in slugging percentage among all qualified hitters in the majors.
• Yandy Diaz has a .348 on-base percentage while slugging .472. Both are team-highs. He has a batting average of .287.
• He is currently 18th in batting average, 45th in on-base percentage and 41st in slugging percentage among all qualifying hitters.
• Brandon Lowe has 15 doubles, 28 home runs and 35 walks while batting .265.
• Chandler Simpson has 11 doubles, three triples and 18 walks while hitting .289.

Mariners vs Rays Head to Head

• 9/2/2025: 6-5 TB (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 9/1/2025: 10-2 TB (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 8/10/2025: 6-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -180, Underdog Moneyline: +152)
• 8/9/2025: 7-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 8/8/2025: 3-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 8/28/2024: 6-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 8/27/2024: 3-2 TB (Favorite: Mariners, Spread: -1.5, Total: 6.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 8/26/2024: 5-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 6/26/2024: 5-2 SEA (Favorite: Rays, Spread: -1.5, Total: 7, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 6/25/2024: 11-3 TB (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -130, Underdog Moneyline: +110)

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