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

Odds updated as of 7:14 a.m.

The Seattle Mariners will face the Tampa Bay Rays in MLB action on Saturday.

Here's everything 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: (-130) | TB: (+110)
• Spread: SEA: -1.5 (+155) | TB: +1.5 (-188)
• Total: 8 -- Over: (-100) | Under: (-122)

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 ball to Logan Evans (5-4, 4.96 ERA), who is eyeing win No. 6 on the season, and the Rays will counter with Joe Boyle (1-1, 2.30 ERA). When Evans starts, his team is 5-8-0 against the spread this season. When Evans starts a game and his team is the favorite on the moneyline, they have a record of 4-3. The Rays have gone 1-2-0 against the spread when Boyle starts. The Rays are 1-2 in Boyle's three starts this season that they were the underdog on the moneyline.

Mariners vs Rays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (51%)

Mariners vs Rays Moneyline

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

Mariners vs Rays Spread

• The Rays are at +1.5 on the runline against the Mariners. The Rays are -188 to cover the spread, and the Mariners are +155.

Mariners vs Rays Over/Under

• Mariners versus Rays on Aug. 9 has an over/under of 8 runs, with the odds on the over -100 and the under set at -122.

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

Mariners vs Rays Betting Trends

• The Mariners have come away with 44 wins in the 78 contests they have been listed as the favorites in this season.
• Seattle has a record of 35-21 when favored by -130 or more this year.
• The Mariners and their opponents have gone over the total this season in 59 of their 114 opportunities.
• 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).
• When playing as a moneyline underdog with odds of +110 or longer, Tampa Bay has a 15-13 record (winning 53.6% of its games).
• The Rays have combined with opponents to go over the total 43 times this season for a 43-64-6 record against the over/under.
• The Rays have a 50-63-0 record against the spread this season (covering 44.2% of the time).

Mariners Player Leaders

• Cal Raleigh has 106 hits, which is tops among Seattle hitters this season, while batting .248 with 59 extra-base hits. He has an on-base percentage of .355 and a slugging percentage of .586.
• Among all qualifying hitters in MLB, 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 is 19th in batting average, 34th in on-base percentage and 65th in slugging in MLB.
• 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 put up 111 hits, a team-high for the Rays. He's batting .256 and slugging .516 with an on-base percentage of .295.
• Including all qualified hitters, he is 84th in batting average, while his on-base percentage ranks 140th and he is 14th in slugging.
• Caminero takes a three-game hitting streak into this matchup. During his last five outings he is hitting .389 with three home runs, a walk and five RBIs.
• Yandy Diaz is slugging .466 to lead his team. He has a batting average of .279 with an on-base percentage of .340.
• His batting average ranks 32nd among all qualified players, his on-base percentage ranks 61st, and he is 45th in slugging.
• Brandon Lowe is batting .274 with 12 doubles, 21 home runs and 26 walks.
• Chandler Simpson is batting .288 with nine doubles, a triple and 13 walks.

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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