Diamondbacks vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for May 31

Odds updated as of 9:12 p.m.

The Arizona Diamondbacks are among the MLB teams busy on Saturday, up against the Washington Nationals.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital info regarding this matchup.

Diamondbacks vs Nationals Game Info

• Arizona Diamondbacks (27-30) vs. Washington Nationals (27-30)
• Date: Saturday, May 31, 2025
• Time: 10:10 p.m. ET
• Venue: Chase Field -- Phoenix, Arizona
• Coverage: Fox Sports 1, ARID, and MASN2

Diamondbacks vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: ARI: (-250) | WSH: (+205)
• Spread: ARI: -1.5 (-118) | WSH: +1.5 (-102)
• Total: 9 -- Over: (-104) | Under: (-118)

Diamondbacks vs Nationals Probable Starting Pitchers

Probable Pitchers: Brandon Pfaadt (Diamondbacks) - 7-3, 3.90 ERA vs Mike Soroka (Nationals) - 1-3, 5.61 ERA

The Diamondbacks will look to Brandon Pfaadt (7-3) against the Nationals and Mike Soroka (1-3). When Pfaadt starts, his team is 8-3-0 against the spread this season. Pfaadt's team has been victorious in 66.7% of the games he's started as the moneyline favorite with a record of 4-2. The Nationals have gone 2-3-0 against the spread when Soroka starts. The Nationals have been the underdog on the moneyline in five of Soroka's starts this season, and they went 1-4 in those matchups.

Diamondbacks vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Diamondbacks win (71.6%)

Diamondbacks vs Nationals Moneyline

• Looking at the moneyline for Nationals-Diamondbacks, Washington is the underdog at +205, and Arizona is -250 playing at home.

Diamondbacks vs Nationals Spread

• The Nationals are +1.5 on the spread (-102 to cover), and Arizona is -118 to cover the runline.

Diamondbacks vs Nationals Over/Under

• An over/under of 9 has been set for Diamondbacks-Nationals on May 31, with the over being -104 and the under -118.

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Diamondbacks vs Nationals Betting Trends

• The Diamondbacks have been chosen as favorites in 36 games this year and have walked away with the win 18 times (50%) in those games.
• Arizona has a record of 2-2 when favored by -250 or more this year.
• The Diamondbacks and their opponents have gone over in 26 of their 56 games with a total set by sportsbooks this season.
• The Diamondbacks are 25-31-0 against the spread in their 56 games that had a posted line this season.
• The Nationals have been the moneyline underdog 44 total times this season. They've finished 24-20 in those games.
• Washington has played as a moneyline underdog of +205 or longer in only one game this season, which it lost.
• The Nationals have had an over/under set by oddsmakers 55 times, and have combined with opponents to go over the total in 28 of those games (28-26-1).
• The Nationals have covered 56.4% of their games this season, going 31-24-0 ATS.

Diamondbacks Player Leaders

• Geraldo Perdomo leads Arizona with an OBP of .388 this season while batting .289 with 33 walks and 28 runs scored. He has a slugging percentage of .447.
• Among the qualifying batters in MLB, his batting average ranks 26th, his on-base percentage ranks 13th, and he is 61st in slugging.
• Corbin Carroll leads Arizona with 61 hits. He is batting .258 this season and has 33 extra-base hits. He's also slugging .559 with an on-base percentage of .330.
• He ranks 79th in batting average, 76th in on-base percentage and ninth in slugging in the majors.
• Carroll has picked up at least one hit in three games in a row. In his last five games he is hitting .136 with two doubles, a home run and an RBI.
• Josh Naylor leads Arizona in slugging percentage (.451) powered by 20 extra-base hits.
• Naylor has picked up a hit in eight games in a row. During his last 10 games he is batting .279 with a double, a triple, a home run and seven RBIs.
• Eugenio Suarez has 15 home runs, 42 RBI and a batting average of .230 this season.

Nationals Player Leaders

• James Wood has a team-best OBP (.385) and slugging percentage (.579), while pacing the Nationals in hits (62, while batting .287).
• Including all qualifying hitters in the majors, he ranks 29th in batting average, 19th in on-base percentage and sixth in slugging percentage.
• Wood takes a six-game hitting streak into this game. In his last 10 games he is hitting .351 with four doubles, four home runs, seven walks and 15 RBIs.
• C.J. Abrams is batting .273 with 11 doubles, two triples, eight home runs and 13 walks. He's slugging .494 with an on-base percentage of .338.
• Including all qualifying hitters, he is 49th in batting average, 65th in on-base percentage and 34th in slugging percentage.
• Luis Garcia is batting .254 with 12 doubles, five home runs and 12 walks.
• Nathaniel Lowe is batting .230 with nine doubles, eight home runs and 22 walks.

Diamondbacks vs Nationals Head to Head

• 5/30/2025: 9-7 WSH (Favorite: Diamondbacks, Spread: -1.5, Total: 9.5, Favorite Moneyline: -225, Underdog Moneyline: +188)
• 4/6/2025: 5-4 WSH (Favorite: Diamondbacks, Spread: -1.5, Total: 7.5, Favorite Moneyline: -180, Underdog Moneyline: +152)
• 4/5/2025: 4-3 WSH (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 4/4/2025: 6-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -146, Underdog Moneyline: +124)
• 7/31/2024: 5-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8, Favorite Moneyline: -172, Underdog Moneyline: +144)
• 7/30/2024: 17-0 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 7/29/2024: 9-8 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -164, Underdog Moneyline: +138)
• 6/20/2024: 5-2 ARI (Favorite: Nationals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 6/19/2024: 3-1 WSH (Favorite: Diamondbacks, Spread: -1.5, Total: 9.5, Favorite Moneyline: -172, Underdog Moneyline: +144)
• 6/18/2024: 5-0 ARI (Favorite: Nationals, Spread: -1.5, Total: 9, Favorite Moneyline: -122, Underdog Moneyline: +104)

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