Red Sox vs Rays Prediction, Odds, Moneyline, Spread & Over/Under for May 9

Odds updated as of 3:11 p.m.

Saturday's slate in the MLB includes a matchup between the Boston Red Sox and the Tampa Bay Rays.

All the information you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Red Sox vs Rays Game Info

• Boston Red Sox (17-22) vs. Tampa Bay Rays (25-13)
• Date: Saturday, May 9, 2026
• Time: 4:10 p.m. ET
• Venue: Fenway Park -- Boston, Massachusetts
• Coverage: NESN and Rays.TV

Red Sox vs Rays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: BOS: (-148) | TB: (+126)
• Spread: BOS: -1.5 (+146) | TB: +1.5 (-176)
• Total: 7.5 -- Over: (-120) | Under: (-102)

Red Sox vs Rays Probable Starting Pitchers

Probable Pitchers: Payton Tolle (Red Sox) - 1-1, 2.04 ERA vs Nick Martínez (Rays) - 3-1, 1.71 ERA

The Red Sox will look to Payton Tolle (1-1) against the Rays and Nick Martinez (3-1). Tolle's team has not covered in any of his three starts with a spread this season. Tolle's team won his only start as a favorite this season. The Rays have a 6-1-0 ATS record in Martínez's seven starts with a set spread. The Rays are 4-1 in Martínez's five starts this season that they were the moneyline underdog.

Red Sox vs Rays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Rays win (55.5%)

Red Sox vs Rays Moneyline

• Tampa Bay is the underdog, +126 on the moneyline, while Boston is a -148 favorite at home.

Red Sox vs Rays Spread

• The Rays are at the Red Sox, and are +1.5 on the runline. The Rays are +146 to cover the spread, and the Red Sox are -176.

Red Sox vs Rays Over/Under

• The over/under for the Red Sox versus Rays contest on May 9 has been set at 7.5, with -120 odds on the over and -102 odds on the under.

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Red Sox vs Rays Betting Trends

• The Red Sox have been chosen as favorites in 26 games this year and have walked away with the win 12 times (46.2%) in those games.
• This season Boston has come away with a win two times in six chances when named as a favorite of at least -148 on the moneyline.
• The Red Sox and their opponents have gone over in 19 of their 39 games with a total set by sportsbooks this season.
• The Red Sox have an against the spread record of 14-25-0 in 39 games with a line this season.
• The Rays have won 10 of the 17 games they were the underdog on the moneyline this season (58.8%).
• Tampa Bay has won all three games it has played as a moneyline underdog with odds of +126 or longer.
• The Rays have combined with opponents to go over the total 19 times this season for a 19-18-0 record against the over/under.
• The Rays have covered 62.2% of their games this season, going 23-14-0 ATS.

Red Sox Player Leaders

• Wilyer Abreu has 43 hits and an OBP of .387 to go with a slugging percentage of .486. All three of those stats rank first among Boston hitters this season. He has a .303 batting average, as well.
• Among all qualifying hitters in the majors, he is 22nd in batting average, 20th in on-base percentage, and 38th in slugging.
• Abreu has recorded a base hit in two games in a row. In his last five games he is hitting .333 with two home runs, four walks and four RBIs.
• Willson Contreras is batting .259 with four doubles, eight home runs and 20 walks. He's slugging .467 with an on-base percentage of .376.
• His batting average is 72nd among qualified players, his on-base percentage 32nd, and his slugging percentage 45th.
• Ceddanne Rafaela has 35 hits this season and has a slash line of .278/.345/.413.
• Rafaela enters this game with two games in a row with at least one hit. In his last five games he is batting .400 with two home runs, two walks and six RBIs.
• Jarren Duran is batting .194 with a .255 OBP and 18 RBI for Boston this season.
• Duran brings a two-game hitting streak into this matchup. During his last five outings he is hitting .238 with a double, a home run, two walks and three RBIs.

Rays Player Leaders

• Junior Caminero is leading the Rays with 36 hits. He's batting .252 and slugging .483 with an on-base percentage of .341.
• Including all qualifying players in the big leagues, he is 86th in batting average, 77th in on-base percentage and 39th in slugging percentage.
• Yandy Diaz leads his team with a .397 on-base percentage. He has a batting average of .316 while slugging .471.
• His batting average ranks 11th among all qualified players, his on-base percentage is 13th, and he is 42nd in slugging.
• Jonathan Aranda is batting .265 with five doubles, seven home runs and 22 walks.
• Chandler Simpson's .354 slugging percentage paces his team.

Red Sox vs Rays Head to Head

• 5/8/2026: 2-0 BOS (Favorite: Red Sox, Spread: -1.5, Total: 8.5, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 5/7/2026: 8-4 TB (Favorite: Red Sox, Spread: -1.5, Total: 8.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 9/21/2025: 7-3 TB (Favorite: Red Sox, Spread: -1.5, Total: 7.5, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 9/20/2025: 6-3 BOS (Favorite: Rays, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 9/19/2025: 11-7 BOS (Favorite: Red Sox, Spread: -1.5, Total: 6.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 7/13/2025: 4-1 BOS (Favorite: Red Sox, Spread: -1.5, Total: 8.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 7/12/2025: 1-0 BOS (Favorite: Red Sox, Spread: -1.5, Total: 8, Favorite Moneyline: -174, Underdog Moneyline: +146)
• 7/11/2025: 5-4 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 7/10/2025: 4-3 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 6/11/2025: 4-3 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9.5, Favorite Moneyline: -124, Underdog Moneyline: +106)

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