Marlins vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 21

Odds updated as of 6:12 p.m.

On Friday in MLB, the Miami Marlins are up against the Washington Nationals.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the most important info about this game.

Marlins vs Nationals Game Info

• Miami Marlins (64-64) vs. Washington Nationals (61-68)
• Date: Friday, August 21, 2026
• Time: 7:10 p.m. ET
• Venue: loanDepot park -- Miami, Florida
• Coverage: Marlins.TV and Nationals.TV

Marlins vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: MIA: (-146) | WSH: (+136)
• Spread: MIA: -1.5 (+140) | WSH: +1.5 (-170)
• Total: 7.5 -- Over: (-122) | Under: (+100)

Marlins vs Nationals Probable Starting Pitchers

Probable Pitchers: Ryan Gusto (Marlins) - 0-3, 4.70 ERA vs Brad Lord (Nationals) - 5-2, 4.04 ERA

The Marlins will call on Ryan Gusto (0-3) versus the Nationals and Brad Lord (5-2). Gusto's team is 6-5-0 against the spread in his starts this season. Gusto's team is 1-2 this season when he starts and they are the moneyline favorite. The Nationals covered in each of Lord's three starts with a set spread. The Nationals were the underdog on the moneyline for two Lord starts this season -- they split the games.

Marlins vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (57.5%)

Marlins vs Nationals Moneyline

• Looking at the moneyline for Nationals-Marlins, Washington is the underdog at +136, and Miami is -146 playing at home.

Marlins vs Nationals Spread

• The Nationals are +1.5 on the spread (-170 to cover), and Miami is +140 to cover the runline.

Marlins vs Nationals Over/Under

• Marlins versus Nationals, on Aug. 21, has an over/under of 7.5, with the over being -122 and the under +100.

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

Marlins vs Nationals Betting Trends

• The Marlins have been favorites in 54 games this season and have come away with the win 35 times (64.8%) in those contests.
• This season Miami has been victorious eight times in 10 chances when named as a favorite of at least -146 on the moneyline.
• Contests with the Marlins have gone over the total set by bookmakers in 62 of 126 chances this season.
• The Marlins have an against the spread mark of 65-61-0 in 126 games with a line this season.
• The Nationals have been the moneyline underdog 99 total times this season. They've finished 44-55 in those games.
• When playing as a moneyline underdog with odds of +136 or longer, Washington has a record of 13-24 (35.1%).
• The Nationals have played in 125 games with a set over/under, and have combined with their opponents to go over the total 65 times (65-55-5).
• The Nationals are 70-55-0 ATS this season.

Marlins Player Leaders

• Otto Lopez leads Miami in slugging percentage (.449) thanks to 45 extra-base hits. He has a .308 batting average and an on-base percentage of .344.
• Among qualified batters in baseball, his batting average ranks fifth, his on-base percentage ranks 54th, and he is 47th in slugging.
• Xavier Edwards leads Miami in OBP (.367) this season, fueled by 134 hits. He's batting .288 while slugging .386.
• He is 15th in batting average, 20th in on-base percentage and 110th in slugging in the majors.
• Edwards brings a six-game streak with at least one hit into this one. During his last 10 outings he is batting .297 with five walks and three RBIs.
• Javier Sanoja has collected 91 base hits, an OBP of .317 and a slugging percentage of .425 this season.
• Sanoja has picked up a hit in four games in a row. In his last five games he is hitting .412 with a double, two home runs, a walk and six RBIs.
• Jakob Marsee has been key for Miami with 84 hits, an OBP of .322 plus a slugging percentage of .311.

Nationals Player Leaders

• CJ Abrams has a slugging percentage of .530, a team-high for the Nationals. He's batting .279 with an on-base percentage of .354.
• Including all qualified players, he ranks 28th in batting average, while his on-base percentage is 41st and he is 11th in slugging.
• Daylen Lile has 23 doubles, five triples, 15 home runs and 29 walks while batting .241. He's slugging .401 with an on-base percentage of .290.
• His batting average is 100th among all qualified players, his on-base percentage ranks 131st, and he is 97th in slugging.
• Jacob Young is hitting .250 with 16 doubles, three triples, 10 home runs and 25 walks.
• Keibert Ruiz is hitting .276 with 21 doubles, seven home runs and 14 walks.

Marlins vs Nationals Head to Head

• 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)
• 5/9/2026: 8-7 MIA (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -164, Underdog Moneyline: +138)
• 5/8/2026: 3-2 WSH (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 9/11/2025: 5-0 MIA (Favorite: Marlins, Spread: -1.5, Total: 8, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 9/10/2025: 8-3 MIA (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -156, Underdog Moneyline: +132)
• 9/9/2025: 7-5 WSH (Favorite: Marlins, Spread: -1.5, Total: 9, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 9/8/2025: 15-7 WSH (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -132, Underdog Moneyline: +112)

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