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

Odds updated as of 1:12 p.m.

On Sunday in MLB, the Tampa Bay Rays are up against the San Francisco Giants.

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

Rays vs Giants Game Info

• Tampa Bay Rays (20-12) vs. San Francisco Giants (13-20)
• 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: (-124) | SF: (+106)
• Spread: TB: -1.5 (+168) | SF: +1.5 (-205)
• Total: 8 -- Over: (-110) | Under: (-110)

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

The Rays will give the ball to Steven Matz (4-1, 4.31 ERA), who is eyeing win No. 5 on the season, and the Giants will turn to Tyler Mahle (1-4, 5.87 ERA). When Matz starts, his team is 5-1-0 against the spread this season. Matz's team has won each of the three games he's started as the moneyline favorite. The Giants have gone 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 underdog on the moneyline.

Rays vs Giants Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Rays win (58.7%)

Rays vs Giants Moneyline

• San Francisco is the underdog, +106 on the moneyline, while Tampa Bay is a -124 favorite at home.

Rays vs Giants Spread

• The Rays are hosting the Giants and are favored by 1.5 runs (+168 to cover) on the runline. San Francisco is -205 to cover.

Rays vs Giants Over/Under

• Rays versus Giants on May 3 has an over/under of 8 runs, with the odds on the over -110 and the under set at -110.

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

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.
• This season Tampa Bay has come away with a win seven times in nine chances when named as a favorite of at least -124 on the moneyline.
• The Rays and their opponents have hit the over in 17 of their 31 games with a total set by oddsmakers this season.
• The Rays are 20-11-0 against the spread in their 31 games that had a posted line this season.
• The Giants have won eight of the 22 games they were the moneyline underdog this season (36.4%).
• San Francisco has a 5-9 record (winning just 35.7% of its games) when playing as a moneyline underdog of +106 or longer.
• The Giants have played in 33 games with a set over/under, and have combined with their opponents to go over the total 14 times (14-16-3).
• The Giants have put together a 13-20-0 record ATS this season (covering only 39.4% of the time).

Rays Player Leaders

• Yandy Diaz leads Tampa Bay with 39 hits and an OBP of .422, plus a team-best slugging percentage of .504. He's batting .333.
• Among qualified batters in baseball, his batting average ranks sixth, his on-base percentage ranks seventh, and he is 29th in slugging.
• Diaz will look for his fourth straight game with a hit in this contest. In his last five games he is batting .313 with two home runs, three walks and three RBIs.
• Junior Caminero has 32 hits, which is best among Tampa Bay batters this season. He's batting .260 with 12 extra-base hits. He's also slugging .504 with an on-base percentage of .333.
• His batting average ranks 68th among qualified players, his on-base percentage 88th, and his slugging percentage 29th.
• Caminero heads into this game looking to extend his three-game hit streak. In his last five games he is hitting .267 with a home run, a walk and an RBI.
• Jonathan Aranda is batting .228 with a .447 slugging percentage and 27 RBI this year.
• Chandler Simpson has an OPS of .695, fueled by an OBP of .343 and a team-best slugging percentage of .352 this season.
• Simpson has safely hit in four straight games. In his last five games he is hitting .263 with a double, a walk and an RBI.

Giants Player Leaders

• Luis Arraez has a team-best .389 slugging percentage. He's batting .317 with an on-base percentage of .343.
• Including all the qualifying players in MLB, his batting average is 14th, his on-base percentage is 71st, and he is 108th in slugging.
• Arraez heads into this game on a three-game hitting streak. In his last five games he is batting .333 with three doubles and three RBIs.
• Jung Hoo Lee is batting .288 with eight doubles, a triple, two home runs and nine walks. He's slugging .424 with an on-base percentage of .333.
• He ranks 40th in batting average, 88th in on-base percentage and 75th in slugging percentage in MLB.
• Casey Schmitt has totaled 30 hits with a .349 on-base percentage, leading the Giants in both categories.
• Matt Chapman is batting .254 with six doubles, a triple, a home run and 14 walks.

Rays vs Giants Head to Head

• 5/2/2026: 5-1 TB (Favorite: Giants, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: +100)
• 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)

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