Marlins vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 31

Odds updated as of 6:13 p.m.

Monday's slate in the MLB includes a matchup between the Miami Marlins and the Washington Nationals.

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

Marlins vs Nationals Game Info

• Miami Marlins (69-68) vs. Washington Nationals (65-74)
• Date: Monday, August 31, 2026
• Time: 6:45 p.m. ET
• Venue: Nationals Park -- Washington, District of Columbia
• Coverage: Fox Sports 1, Nationals.TV, and Marlins.TV

Marlins vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: MIA: (-112) | WSH: (+104)
• Spread: MIA: -1.5 (+134) | WSH: +1.5 (-162)
• Total: 8.5 -- Over: (-110) | Under: (-110)

Marlins vs Nationals Probable Starting Pitchers

Probable Pitchers: Ryan Gusto (Marlins) - 1-3, 3.98 ERA vs Will Dion (Nationals) - 1-1, 3.67 ERA

The Marlins will give the nod to Ryan Gusto (1-3) against the Nationals and Will Dion (1-1). Gusto and his team are 7-6-0 ATS this season when he starts. Gusto's team is 2-2 this season when he starts and they are the moneyline favorite. Dion never pitched as a moneyline underdog a season ago.

Marlins vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (50.4%)

Marlins vs Nationals Moneyline

• Looking at the moneyline for Nationals-Marlins, Washington is the underdog at +104, and Miami is -112 playing on the road.

Marlins vs Nationals Spread

• The Marlins are favored by 1.5 runs on the road against the Nationals. The Marlins are +134 to cover the spread, while the Nationals are -162.

Marlins vs Nationals Over/Under

• Marlins versus Nationals, on Aug. 31, has an over/under of 8.5, with the over being -110 and the under -110.

Bet on Miami Marlins vs. Washington Nationals on FanDuel today!

Marlins vs Nationals Betting Trends

• The Marlins have been favorites in 59 games this season and have come away with the win 38 times (64.4%) in those contests.
• Miami has a record of 37-17 in contests when bookmakers favor them by -112 or more on the moneyline.
• The Marlins and their opponents have hit the over in 65 of their 135 games with a total set by oddsmakers this season.
• The Marlins have posted a record of 69-66-0 against the spread this season.
• The Nationals have won 46 of the 104 games they were listed as the moneyline underdog this season (44.2%).
• Washington has a record of 37-52 when it has played as a moneyline underdog with odds of +104 or longer (41.6%).
• The Nationals have had an over/under set by bookmakers 135 times, and have combined with opponents to go over the total in 69 of those games (69-61-5).
• The Nationals have collected a 75-60-0 record ATS this season (covering 55.6% of the time).

Marlins Player Leaders

• Otto Lopez leads Miami with 163 hits and a team-best slugging percentage of .444. He's batting .305 with an on-base percentage of .340.
• Among all qualifying batters in the majors, his batting average ranks fifth, his on-base percentage ranks 57th, and he is 50th in slugging.
• Lopez will look for his seventh straight game with a hit in this contest. In his last 10 games he is batting .275 with a double, a home run, three walks and seven RBIs.
• Xavier Edwards leads Miami with an OBP of .361 this season while batting .282 with 65 walks and 59 runs scored. He's slugging .376.
• Among qualified hitters, his batting average ranks him 21st, his on-base percentage 29th, and his slugging percentage 111th.
• Javier Sanoja has collected 100 base hits, an OBP of .319 and a slugging percentage of .417 this season.
• Jakob Marsee has eight home runs, 31 RBI and a batting average of .208 this season.

Nationals Player Leaders

• C.J. Abrams has a slugging percentage of .506, a team-best for the Nationals. He's batting .267 with an on-base percentage of .343.
• He is 50th in batting average, 49th in on-base percentage and 12th in slugging percentage among all qualifying hitters in MLB.
• Daylen Lile has 26 doubles, six triples, 18 home runs and 35 walks while batting .252. He's slugging .428 with an on-base percentage of .304.
• He ranks 77th in batting average, 114th in on-base percentage and 62nd in slugging percentage in the majors.
• Jacob Young is batting .248 with 19 doubles, three triples, 10 home runs and 29 walks.
• Keibert Ruiz is batting .280 with 22 doubles, nine home runs and 16 walks.

Marlins vs Nationals Head to Head

• 8/30/2026: 6-2 MIA (Favorite: Nationals, Spread: -1.5, Total: 9.5, Favorite Moneyline: -118, Underdog Moneyline: +110)
• 8/29/2026: 5-4 WSH (Favorite: Marlins, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: +100)
• 8/28/2026: 9-2 WSH (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +124)
• 8/23/2026: 6-2 MIA (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -158, Underdog Moneyline: +146)
• 8/22/2026: 4-2 MIA (Favorite: Marlins, Spread: -1.5, Total: 7.5, Favorite Moneyline: -180, Underdog Moneyline: +166)
• 8/21/2026: 3-2 MIA (Favorite: Marlins, Spread: -1.5, Total: 7.5, Favorite Moneyline: -146, Underdog Moneyline: +136)
• 6/3/2026: 4-1 MIA (Favorite: Nationals, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 6/2/2026: 7-3 MIA (Favorite: Nationals, Spread: -1.5, Total: 9, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 6/1/2026: 7-3 MIA (Favorite: Nationals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 5/10/2026: 5-2 MIA (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -130, Underdog Moneyline: +110)

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