Mariners vs Rays Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 9

Odds updated as of 9:11 p.m.

The Seattle Mariners versus the Tampa Bay Rays is on the MLB schedule for Saturday.

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

Mariners vs Rays Game Info

• Seattle Mariners (64-53) vs. Tampa Bay Rays (57-60)
• Date: Saturday, August 9, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: MLB Network, ROOT Sports NW, and FDSSUN

Mariners vs Rays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-142) | TB: (+120)
• Spread: SEA: -1.5 (+146) | TB: +1.5 (-176)
• Total: 7.5 -- Over: (-124) | Under: (+102)

Mariners vs Rays Probable Starting Pitchers

Probable Pitchers: Logan Evans (Mariners) - 5-4, 4.96 ERA vs Joe Boyle (Rays) - 1-1, 2.30 ERA

The Mariners will give the nod to Logan Evans (5-4) against the Rays and Joe Boyle (1-1). Evans and his team are 5-8-0 ATS this season when he starts. Evans' team has a record of 4-3 this season when he starts and they are the favorite on the moneyline. The Rays have gone 1-2-0 ATS in Boyle's three starts with a set spread. The Rays have been the moneyline underdog in three of Boyle's starts this season, and they went 1-2 in those games.

Mariners vs Rays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (50%)

Mariners vs Rays Moneyline

• The Mariners vs Rays moneyline has Seattle as a -142 favorite, while Tampa Bay is a +120 underdog on the road.

Mariners vs Rays Spread

• The Rays are +1.5 on the run line against the Mariners. The Rays are -176 to cover, and the Mariners are +146.

Mariners vs Rays Over/Under

• Mariners versus Rays, on Aug. 9, has an over/under of 7.5, with the over being -124 and the under +102.

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

Mariners vs Rays Betting Trends

• The Mariners have been favorites in 78 games this season and have come away with the win 44 times (56.4%) in those contests.
• Seattle has a record of 22-14 in contests when sportsbooks favor them by -142 or more on the moneyline.
• Contests with the Mariners have gone over the total set by sportsbooks in 59 of 114 chances this season.
• In 114 games with a line this season, the Mariners have a mark of 49-65-0 against the spread.
• The Rays have gone 22-32 in games they were listed as the moneyline underdog (winning 40.7% of those games).
• Tampa Bay is 10-12 (winning 45.5% of its games) when playing as a moneyline underdog of +120 or longer.
• The Rays have played in 113 games with an over/under set, and have combined with their opponents to go over the total 43 times (43-64-6).
• The Rays have put together a 50-63-0 record against the spread this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 106 hits, batting .248 this season with 59 extra-base hits. He has an on-base percentage of .355 and a slugging percentage of .586.
• Among qualifying hitters in the majors, he ranks 105th in batting average, 34th in on-base percentage, and fourth in slugging.
• Josh Naylor is batting .289 with 20 doubles, a triple, 14 home runs and 41 walks. He's slugging .451 with an on-base percentage of .355.
• He ranks 18th in batting average, 34th in on-base percentage and 63rd in slugging among qualifying hitters.
• Eugenio Suarez has 99 hits this season and has a slash line of .237/.306/.550.
• Julio Rodriguez leads Seattle in slugging percentage (.435) thanks to 43 extra-base hits.

Rays Player Leaders

• Junior Caminero has racked up 111 hits, a team-high for the Rays. He's batting .256 and slugging .516 with an on-base percentage of .295.
• He is 85th in batting average, 140th in on-base percentage and 14th in slugging percentage among all qualified hitters in the big leagues.
• Caminero hopes to build on a three-game hitting streak in this matchup. In his last five games he is batting .389 with three home runs, a walk and five RBIs.
• Yandy Diaz paces his team with a .466 slugging percentage. He has a batting average of .279 with an on-base percentage of .340.
• He is currently 31st in batting average, 60th in on-base percentage and 47th in slugging percentage among all qualifying hitters.
• Brandon Lowe is batting .274 with 12 doubles, 21 home runs and 26 walks.
• Chandler Simpson has nine doubles, a triple and 13 walks while batting .288.

Mariners vs Rays Head to Head

• 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)
• 6/24/2024: 4-3 TB (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 9/10/2023: 6-3 TB (Favorite: Rays, Spread: -1.5, Total: 8, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 9/9/2023: 7-5 TB (Favorite: Rays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 9/8/2023: 7-4 TB (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)

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