Rays vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 30

Odds updated as of 6:11 a.m.

The Tampa Bay Rays are among the MLB teams in action on Saturday, versus the Washington Nationals.

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

Rays vs Nationals Game Info

• Tampa Bay Rays (65-69) vs. Washington Nationals (53-81)
• Date: Saturday, August 30, 2025
• Time: 4:05 p.m. ET
• Venue: Nationals Park -- Washington, District of Columbia
• Coverage: MASN and FDSSUN

Rays vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: TB: (-154) | WSH: (+130)
• Spread: TB: -1.5 (+104) | WSH: +1.5 (-125)
• Total: 9 -- Over: (-112) | Under: (-108)

Rays vs Nationals Probable Starting Pitchers

Probable Pitchers: Ryan Pepiot (Rays) - 9-10, 3.82 ERA vs Jake Irvin (Nationals) - 8-9, 5.40 ERA

This contest's pitching matchup is set, as the Rays will send Ryan Pepiot (9-10) to the mound, while Jake Irvin (8-9) will take the ball for the Nationals. When Pepiot starts, his team is 8-18-0 against the spread this season. Pepiot's team has a record of 7-5 this season when he starts and they are the favorite on the moneyline. The Nationals have a 15-11-0 record against the spread in Irvin's starts. The Nationals are 13-12 in Irvin's 25 starts this season that they were the moneyline underdog.

Rays vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Rays win (60.7%)

Rays vs Nationals Moneyline

• The moneyline numbers for Rays vs. Nationals reveal Tampa Bay as the favorite (-154) and Washington as the underdog (+130) despite being the home team.

Rays vs Nationals Spread

• The Rays are 1.5-run road favorites on the runline against the Nationals. The Rays are +104 to cover, and the Nationals are -125.

Rays vs Nationals Over/Under

• A combined run total of 9 has been set for Rays-Nationals on Aug. 30, with the over at -112 and the under at -108.

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Rays vs Nationals Betting Trends

• The Rays have come away with 35 wins in the 60 contests they have been listed as the favorites in this season.
• Tampa Bay has a record of 6-11 when favored by -154 or more this year.
• The Rays' games have gone over the total in 54 of their 129 opportunities.
• In 129 games with a line this season, the Rays have a mark of 55-74-0 against the spread.
• The Nationals have won 47 of the 109 games they were listed as the moneyline underdog this season (43.1%).
• Washington has gone 26-36 when playing as a moneyline underdog with odds of +130 or longer (41.9%).
• The Nationals have played in 128 games with a set over/under, and have combined with opponents to go over the total 68 times (68-53-7).
• The Nationals have covered 49.2% of their games this season, going 63-65-0 against the spread.

Rays Player Leaders

• Junior Caminero leads Tampa Bay in total hits (130) this season while batting .258 with 61 extra-base hits. He has an on-base percentage of .300 and a slugging percentage of .534.
• Among all qualified batters in baseball, he is 80th in batting average, 129th in on-base percentage, and 11th in slugging.
• Yandy Diaz is slashing .287/.346/.473 this season and leads the Rays with an OPS of .819.
• He ranks 19th in batting average, 46th in on-base percentage and 41st in slugging in the majors.
• Diaz enters this game looking to extend his four-game hit streak. During his last five outings he is batting .421 with three doubles, a home run, two walks and an RBI.
• Brandon Lowe has collected 110 base hits, an OBP of .320 and a slugging percentage of .490 this season.
• Lowe brings a two-game hitting streak into this game. In his last five games he is hitting .176 with two home runs, four walks and four RBIs.
• Chandler Simpson is batting .295 with a .331 OBP and 22 RBI for Tampa Bay this season.

Nationals Player Leaders

• C.J. Abrams has accumulated a slugging percentage of .455, a team-high for the Nationals. He's batting .270 with an on-base percentage of .331.
• Including all the qualifying hitters in the big leagues, he is 45th in batting average, 73rd in on-base percentage and 58th in slugging percentage.
• Abrams hopes to build on a four-game hitting streak in this matchup. During his last five outings he is batting .400 with a double, a walk and two RBIs.
• James Wood leads his team with 130 hits and a .357 on-base percentage, with a team-best .478 slugging percentage. He has a batting average of .260.
• Including all qualified hitters, he ranks 72nd in batting average, 28th in on-base percentage and 35th in slugging percentage.
• Luis Garcia is batting .260 with 25 doubles, a triple, 11 home runs and 23 walks.
• Josh Bell is hitting .229 with 12 doubles, a triple, 16 home runs and 51 walks.

Rays vs Nationals Head to Head

• 8/29/2025: 4-1 TB (Favorite: Rays, Spread: -1.5, Total: 9, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 6/30/2024: 5-0 TB (Favorite: Rays, Spread: -1.5, Total: 8, Favorite Moneyline: -188, Underdog Moneyline: +158)
• 6/29/2024: 8-1 WSH (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 6/28/2024: 3-1 TB (Favorite: Rays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -174, Underdog Moneyline: +146)
• 4/5/2023: 7-2 TB (Favorite: Rays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -275, Underdog Moneyline: +225)
• 4/4/2023: 10-6 TB (Favorite: Rays, Spread: -1.5, Total: 9, Favorite Moneyline: -176, Underdog Moneyline: +148)
• 4/3/2023: 6-2 TB (Favorite: Rays, Spread: -1.5, Total: 8, Favorite Moneyline: -184, Underdog Moneyline: +154)

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