Giants vs Rays Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 15

Odds updated as of 10:16 p.m.

The Friday slate in MLB includes a matchup between the San Francisco Giants and the Tampa Bay Rays.

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

Giants vs Rays Game Info

• San Francisco Giants (59-62) vs. Tampa Bay Rays (59-63)
• Date: Friday, August 15, 2025
• Time: 10:15 p.m. ET
• Venue: Oracle Park -- San Francisco, California
• Coverage: MLB Network, NBCS-BA, and FDSSUN

Giants vs Rays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SF: (-112) | TB: (-104)
• Spread: SF: +1.5 (-200) | TB: -1.5 (+164)
• Total: 8 -- Over: (-110) | Under: (-110)

Giants vs Rays Probable Starting Pitchers

Probable Pitchers: Landen Roupp (Giants) - 7-6, 3.20 ERA vs Joe Boyle (Rays) - 1-2, 3.82 ERA

The Giants will look to Landen Roupp (7-6) against the Rays and Joe Boyle (1-2). Roupp and his team are 10-10-0 ATS this season when he starts. Roupp's team is 5-2 this season when he starts and they are the moneyline favorite. The Rays have a 1-3-0 ATS record in Boyle's four starts with a set spread. The Rays have a 1-3 record in Boyle's four starts this season when they were the underdog on the moneyline.

Giants vs Rays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Rays win (57.8%)

Giants vs Rays Moneyline

• The moneyline numbers for Giants vs. Rays reveal San Francisco as the favorite (-112) and Tampa Bay as the underdog (-104) on the road.

Giants vs Rays Spread

• The Rays are 1.5-run favorites against the spread for this matchup with the Giants. The Rays are +164 to cover, while the Giants are -200 to cover as a 1.5-run underdog on the runline.

Giants vs Rays Over/Under

• A combined run total of 8 has been set for Giants-Rays on Aug. 15, with the over at -110 and the under at -110.

Bet on San Francisco Giants vs. Tampa Bay Rays on FanDuel today!

Giants vs Rays Betting Trends

• The Giants have won in 38, or 50%, of the 76 contests they have been named as odds-on favorites in this year.
• This year San Francisco has won 37 of 74 games when listed as at least -112 on the moneyline.
• Contests with the Giants have gone over the total set by sportsbooks in 54 of 121 chances this season.
• In 121 games with a line this season, the Giants have a mark of 50-71-0 against the spread.
• The Rays have won 39.7% of the games this season they were the underdog on the moneyline (23-35).
• Tampa Bay has gone 22-30 in games it has played as a moneyline underdog with odds of -104 or longer (42.3%).
• The Rays have had an over/under set by bookmakers 118 times, and have combined with opponents to go over the total in 47 of those games (47-65-6).
• The Rays have gone 52-66-0 against the spread this season.

Giants Player Leaders

• Rafael Devers has 116 hits and an OBP of .378, both of which are tops among San Francisco hitters this season. He has a .256 batting average and a slugging percentage of .467.
• Among all qualified hitters in the majors, he ranks 85th in batting average, 10th in on-base percentage, and 43rd in slugging.
• Devers hopes to build on a three-game hitting streak in this matchup. During his last five outings he is batting .263 with two home runs, two walks and two RBIs.
• Jung Hoo Lee is batting .257 with 27 doubles, 10 triples, six home runs and 38 walks, while slugging .407 with an on-base percentage of .322.
• Among all qualified, he ranks 84th in batting average, 92nd in on-base percentage and 96th in slugging percentage.
• Lee heads into this game looking to extend his three-game hit streak. During his last five outings he is batting .235 with a triple.
• Willy Adames is batting .223 with a .393 slugging percentage and 61 RBI this year.
• Heliot Ramos leads San Francisco with a slugging percentage of .406, fueled by 35 extra-base hits.

Rays Player Leaders

• Junior Caminero has collected 119 hits, a team-high for the Rays. He's batting .262 and slugging .532 with an on-base percentage of .300.
• Including all qualified players, he ranks 67th in batting average, while his on-base percentage is 134th and he is 10th in slugging.
• Yandy Diaz leads his team with a .464 slugging percentage. He has a batting average of .280 with an on-base percentage of .343.
• His batting average ranks 30th among all qualified players, his on-base percentage ranks 55th, and he is 44th in slugging.
• Brandon Lowe is batting .275 with 13 doubles, 24 home runs and 27 walks.
• Chandler Simpson is hitting .302 with 10 doubles, two triples and 15 walks.

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