Rays vs Giants Prediction, Odds, Moneyline, Spread & Over/Under for May 3

Odds updated as of 8:11 p.m.

MLB action on Sunday includes the Tampa Bay Rays playing the San Francisco Giants.

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

Rays vs Giants Game Info

• Tampa Bay Rays (19-12) vs. San Francisco Giants (13-19)
• Date: Sunday, May 3, 2026
• Time: 1:40 p.m. ET
• Venue: Tropicana Field -- St. Petersburg, Florida
• Coverage: Rays.TV and NBCS-BA

Rays vs Giants Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: TB: (-118) | SF: (+100)
• Spread: TB: +1.5 (-205) | SF: -1.5 (+168)
• Total: 8 -- Over: (-120) | Under: (-102)

Rays vs Giants Probable Starting Pitchers

Probable Pitchers: Steven Matz (Rays) - 4-1, 4.31 ERA vs Tyler Mahle (Giants) - 1-4, 5.87 ERA

This contest's pitching matchup is set, as the Rays will send Steven Matz (4-1) to the mound, while Tyler Mahle (1-4) will answer the bell for the Giants. Matz's team is 5-1-0 against the spread in his starts this season. Matz and his team have won each of the three games he's started as the moneyline favorite. The Giants are 2-4-0 ATS in Mahle's six starts that had a set spread. The Giants have a 2-3 record in Mahle's five starts this season when they were the moneyline underdog.

Rays vs Giants Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Rays win (59.2%)

Rays vs Giants Moneyline

• Tampa Bay is a -118 favorite on the moneyline, while San Francisco is a +100 underdog on the road.

Rays vs Giants Spread

• The Giants are 1.5-run favorites against the spread for this matchup with the Rays. The Giants are +168 to cover, while the Rays are -205 to cover as a 1.5-run underdog on the runline.

Rays vs Giants Over/Under

• A combined run total of 8 has been set for Rays-Giants on May 3, with the over at -120 and the under at -102.

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Rays vs Giants Betting Trends

• The Rays have been favorites in 16 games this season and have come away with the win 11 times (68.8%) in those contests.
• Tampa Bay has a record of 9-2 in contests when oddsmakers favor them by -118 or more on the moneyline.
• The Rays and their opponents have gone over in 17 of their 30 games with a total set by sportsbooks this season.
• The Rays are 19-11-0 against the spread in their 30 games that had a posted line this season.
• The Giants have gone 8-14 in games they were the underdog on the moneyline (winning 36.4% of those games).
• San Francisco has gone 6-11 when playing as a moneyline underdog with odds of +100 or longer (35.3%).
• In the 32 games oddsmakers have set an over/under for the Giants, they have combined with opponents to go over the total 14 times (14-15-3).
• The Giants have covered 40.6% of their games this season, going 13-19-0 against the spread.

Rays Player Leaders

• Yandy Diaz has an OPS of .926, fueled by an OBP of .422 to go with a slugging percentage of .504. He has a .333 batting average, as well.
• Among qualified batters in the majors, he ranks sixth in batting average, seventh in on-base percentage, and 32nd in slugging.
• Diaz hopes to build on a three-game hitting streak in this matchup. During his last five outings he is hitting .313 with two home runs, three walks and three RBIs.
• Junior Caminero leads Tampa Bay with 31 hits. He is batting .258 this season and has 12 extra-base hits. He's also slugging .508 with an on-base percentage of .328.
• Among qualified hitters, his batting average ranks him 74th, his on-base percentage 97th, and his slugging percentage 31st.
• Caminero enters this matchup looking to extend his two-game hit streak. In his last five games he is hitting .188 with a home run and an RBI.
• Jonathan Aranda has collected 24 base hits, an OBP of .331 and a slugging percentage of .445 this season.
• Chandler Simpson has been key for Tampa Bay with 38 hits, an OBP of .346 plus a slugging percentage of .355.
• Simpson enters this matchup on a three-game hitting streak. In his last five games he is hitting .368 with a double, a walk and an RBI.

Giants Player Leaders

• Luis Arraez has accumulated a team-best .369 slugging percentage. He's batting .303 with an on-base percentage of .331.
• Including all qualified hitters in MLB, his batting average places him 25th, his on-base percentage is 91st, and he is 126th in slugging.
• Jung Hoo Lee is hitting .298 with eight doubles, a triple, two home runs and nine walks. He's slugging .439 with an on-base percentage of .344.
• His batting average ranks 30th among all qualified players, his on-base percentage is 74th, and he is 64th in slugging.
• Casey Schmitt has put up a team-high OBP (.352), and paces the Giants in hits (29).
• Matt Chapman is batting .262 with six doubles, a triple, a home run and 14 walks.

Rays vs Giants Head to Head

• 5/1/2026: 3-0 TB (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 8/17/2025: 7-1 SF (Favorite: Giants, Spread: -1.5, Total: 7, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 8/16/2025: 2-1 TB (Favorite: Rays, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/15/2025: 7-6 TB (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 4/14/2024: 9-4 TB (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 4/13/2024: 11-2 SF (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 4/12/2024: 2-1 TB (Favorite: Rays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 8/16/2023: 6-1 TB (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 8/15/2023: 7-0 SF (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/14/2023: 10-2 TB (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +114)

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