Nationals vs Diamondbacks Prediction, Odds & Player Prop Bets Today – MLB, Jul 31

(AP Photo/Matt York)
  • The Diamondbacks are -185 favorites vs the Nationals
  • Nationals vs Diamondbacks Over / Under today: 8.5 Runs
  • Nationals / Diamondbacks TV Channel: MAS2 | DBTV | MLBN

The Washington Nationals (+150) visit Chase Field to take on the Arizona Diamondbacks (-185) on Wednesday, July 31, 2024. First pitch is scheduled for 3:40pm EDT in Phoenix, AZ.

This season, the Nationals are 49-59 against the spread (ATS), while the Diamondbacks are 55-53 ATS.

Nationals vs Diamondbacks Starting Pitchers Today:

  • Nationals starting pitcher: MacKenzie Gore 6-8, 4.49 ERA
  • Diamondbacks starting pitcher: Zac Gallen 8-5, 3.71 ERA

Nationals vs. Diamondbacks Odds, Run Line, Over/Under & Moneyline

SpreadOver / UnderMoneyline
Nationals+1.5 -135O 8.5 -110+150
Diamondbacks -1.5 +110U 8.5 -110-185

Nationals vs Diamondbacks Prediction for Today’s Game

Based on recent trends the model predicts the Diamondbacks will win Wednesday‘s MLB game with 57.6% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.


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We’ve highlighted some favorite MLB player prop bets for Nationals players for Wednesday‘s game, looking at profitable historical betting trends:

Best Nationals Player Prop Bets Today:

  • Juan Yepez has hit the Total Bases Over in 17 of his last 21 games (+15.85 Units / 60% ROI)
  • Juan Yepez has hit the Hits Over in 18 of his last 21 games (+11.15 Units / 27% ROI)
  • Juan Yepez has hit the Runs Over in 12 of his last 20 games (+9.30 Units / 47% ROI)
  • MacKenzie Gore has hit the Pitching Outs Under in 9 of his last 10 games (+8.00 Units / 70% ROI)
  • Juan Yepez has hit the Hits Runs and RBIs Over in 14 of his last 20 games (+7.70 Units / 33% ROI)

And here are some favorite MLB player prop bets for Diamondbacks players for Wednesday‘s game, looking at profitable historical betting trends:

Best Diamondbacks Player Prop Best Bets Today:

  • Eugenio Suarez has hit the Home Runs Over in 8 of his last 19 games (+34.40 Units / 181% ROI)
  • Geraldo Perdomo has hit the Runs Over in 15 of his last 23 games (+16.40 Units / 71% ROI)
  • Ketel Marte has hit the RBIs Over in 10 of his last 14 games (+12.55 Units / 90% ROI)
  • Ketel Marte has hit the Total Bases Over in 12 of his last 14 games (+11.50 Units / 76% ROI)
  • Ketel Marte has hit the Hits Over in 12 of his last 15 games (+11.20 Units / 46% ROI)
  • The Washington Nationals have hit the 1st Five Innings (F5) Team Total Over in 23 of their last 33 away games (+12.45 Units / 31% ROI)
  • The Washington Nationals have covered the Run Line in 58 of their last 100 games (+11.05 Units / 8% ROI)
  • The Washington Nationals have hit the Moneyline in 47 of their last 100 games (+8.90 Units / 8% ROI)
  • The Washington Nationals have hit the Game Total Over in 21 of their last 34 games (+7.70 Units / 21% ROI)
  • The Washington Nationals have hit the 1st Five Innings (F5) Moneyline in 23 of their last 55 away games (+3.20 Units / 6% ROI)
  • The Arizona Diamondbacks have hit the Game Total Over in 35 of their last 52 games (+17.20 Units / 30% ROI)
  • The Arizona Diamondbacks have hit the Team Total Over in 29 of their last 43 games (+13.50 Units / 27% ROI)
  • The Arizona Diamondbacks have hit the 1st Five Innings (F5) Team Total Over in 37 of their last 60 games (+12.00 Units / 17% ROI)
  • The Arizona Diamondbacks have hit the Moneyline in 32 of their last 51 games (+11.75 Units / 18% ROI)
  • The Arizona Diamondbacks have covered the Run Line in 27 of their last 43 games (+10.30 Units / 18% ROI)

Nationals Against the Spread (ATS) Record

Against the spread this season, the Nationals are 61-47 against the Run Line (+7.13 Units / 5.03% ROI).

  • 49-59 when betting on the Moneyline for +5.65 Units / 4.99% ROI
  • 52-51 when betting on the total runs Over for -3.85 Units / -3.27% ROI
  • 51-52 when betting on the total runs Under for -7.12 Units / -5.94% ROI

Diamondbacks Against the Spread (ATS) Record

Against the spread this season, the Diamondbacks are 55-53 against the Run Line (-4.1 Units / -2.85% ROI).

  • 57-51 when betting on the Moneyline for +2 Units / 1.48% ROI
  • 58-47 when betting on the total runs Over for +5.85 Units / 4.88% ROI
  • 47-58 when betting on the total runs Under for -16.5 Units / -13.98% ROI

Diamondbacks vs Nationals Home Run Prop Bets Today

Over Under
Ketel Marte (ARI) 0.5 +425 0.5 -600
Eugenio Suarez (ARI) 0.5 +525 0.5 -750
Randal Grichuk (ARI) 0.5 +575 0.5 -800
CJ Abrams (WAS) 0.5 +625 0.5 -1000
Lourdes Gurriel Jr. (ARI) 0.5 +625 0.5 -1000

Diamondbacks vs Nationals Total Hits Prop Bets Today

Over Under
Randal Grichuk (ARI) 0.5 -250 0.5 +190
CJ Abrams (WAS) 0.5 -225 0.5 +165
Juan Yepez (WAS) 0.5 -225 0.5 +165
Luis Garcia (WAS) 0.5 -225 0.5 +165
Keibert Ruiz (WAS) 0.5 -210 0.5 +155

Diamondbacks vs Nationals RBI Prop Bets Today

Over Under
Lourdes Gurriel Jr. (ARI) 0.5 +135 0.5 -175
Eugenio Suarez (ARI) 0.5 +145 0.5 -190
Randal Grichuk (ARI) 0.5 +145 0.5 -200
Ketel Marte (ARI) 0.5 +150 0.5 -200
CJ Abrams (WAS) 0.5 +175 0.5 -250

Diamondbacks vs Nationals Strikeout Prop Bets Today

Over Under
Zac Gallen (ARI) 4.5 -165 4.5 +125
Mackenzie Gore (WAS) 5.5 +125 5.5 -165

Opponents have a line drive rate of 28% (247/870) against MacKenzie Gore since the 2022 season — highest in MLB among starting pitchers with at least 172 total IP; League Avg: 23% — 0 Percentile.

Opponents have a miss rate of 36% (53/149) against MacKenzie Gore on the first pitch of at-bats this season — 4th best in MLB among starting pitchers with at least 42 total IP; League Avg: 25% — 97th Percentile.

Opponents have a line drive rate of 33% (84/257) against MacKenzie Gore on pitches in the strike zone this season — highest in MLB among starting pitchers with at least 42 total IP; League Avg: 24% — 0 Percentile.

Opponents have a line drive rate of 32% (95/301) against MacKenzie Gore this season — highest in MLB among starting pitchers with at least 42 total IP; League Avg: 24% — 0 Percentile.

Diamondbacks Starting Pitcher Stats & Trends

Zac Gallen has walked 8 of 29 right-handed batters (28%) in his last two starts — highest in MLB over the last two weeks; League Avg: 7% — first Percentile.

Zac Gallen has walked 9 of 51 batters (18%) in his last two starts — highest in MLB over the last two weeks; League Avg: 7% — first Percentile.

Zac Gallen has walked 12 of 64 right-handed batters (19%) this month (5 games) — highest among qualified SPs in MLB; League Avg: 6% — first Percentile.

Zac Gallen has allowed an OPS of just .579 (730 PA’s) when going through the lineup the first time in a game since the 2022 season — 3rd best among qualified SPs in MLB; League Avg: .667 — 90th Percentile.

Nationals Keys to the Game vs. the Diamondbacks

The Nationals are 9-2 (.818) after a loss as favorites since the 2023 season — 2nd best in MLB; League Avg: .576.

The Nationals are just 31-50 (.383) after a home win since the 2022 season — lowest in MLB; League Avg: .532.

The Nationals are just 53-211 (.201) when scoring 4 or fewer runs since the 2022 season — 2nd lowest in MLB; League Avg: .280.

The Nationals are just 66-108 (.379) after a win since the 2022 season — lowest in MLB; League Avg: .509.

Diamondbacks Keys to the Game vs. the Nationals

The Diamondbacks are just 180-18 (.909) when leading entering the 9th inning since the 2022 season — 2nd lowest in MLB; League Avg: .950.

The Diamondbacks are just 46-5 (.902) when leading entering the 9th inning this season — 5th lowest in MLB; League Avg: .944.

The Diamondbacks are 46-10 (.821) when allowing 4 or fewer runs this season — 3rd best in MLB; League Avg: .726.

The Diamondbacks are 17-11 (.607) when tied entering the 8th inning since the 2023 season — 5th best in MLB; League Avg: .500.

Nationals hitters have an OPS of just .958 (1,858 PA’s) with the pitcher behind in the count since last season — lowest in MLB; League Avg: 1.089.

Nationals hitters have just 970 strikeouts in 4,981 PA’s (20%) against LHP since the 2022 season — 3rd best in MLB; League Avg: 22%.

The Nationals have an average Exit Velocity of 87.9 MPH since last season — 2nd lowest in MLB; League Avg: 88.9.

Nationals hitters have just 2,226 strikeouts in 11,101 PA’s (20%) against RHP since the 2022 season — 2nd best in MLB; League Avg: 23%.

The Diamondbacks are batting .283 against division opponents this season — best in MLB; League Avg: .243.

Diamondbacks hitters have an OPS of .728 (505 PA’s) with two-strikes this month (24 games) — best in MLB; League Avg: .528.

Diamondbacks hitters have an OBP of .315 (505 PA’s) with two-strikes this month (24 games) — best in MLB; League Avg: .246.

The Diamondbacks are batting .280 against LHP this season — best in MLB; League Avg: .249.

Opponents have a miss rate of just 23% against Nationals pitchers since last season — 2nd lowest in MLB; League Avg: 26%.

Nationals pitchers have a strikeout rate of just 39% with two-strikes since the 2022 season — 2nd lowest in MLB; League Avg: 42%.

Nationals pitchers have a strikeout rate of just 39% with two-strikes since last season — 2nd lowest in MLB; League Avg: 42%.

Nationals pitchers have allowed an OBP of .345 (3,802 PA’s) when facing the leadoff batter in the inning since the 2022 season — 2nd highest in MLB; League Avg: .308.

Diamondbacks pitchers have a strikeout rate of just 19% this season — 2nd lowest in MLB; League Avg: 22%.

The Diamondbacks pitchers have allowed their opponents to score first in just 37% of their games this season — lowest in MLB; League Avg: 50%.

Diamondbacks pitchers have a strikeout rate of just 39% with two-strikes this season — 2nd lowest in MLB; League Avg: 42%.

Opponents have a miss rate of just 23% against Diamondbacks pitchers this season — 2nd lowest in MLB; League Avg: 25%.

Diamondbacks vs. Nationals Injuries Tonight That May Affect Prop Bets 

  • Merrill Kelly (Arizona Diamondbacks): Shoulder, 60-Day IL
  • Kyle Nelson (Arizona Diamondbacks): Shoulder, 60-Day IL
  • Jordan Lawlar (Arizona Diamondbacks): Hamstring, 7-Day IL
  • Eduardo Rodriguez (Arizona Diamondbacks): Shoulder, 60-Day IL
  • Andrew Saalfrank (Arizona Diamondbacks): Suspension, Suspension
  • Blake Walston (Arizona Diamondbacks): Elbow, 15-Day IL
  • Drey Jameson (Arizona Diamondbacks): Elbow, 60-Day IL
  • Jake Alu (Washington Nationals): Undisclosed, 7-Day IL
  • Joey Gallo (Washington Nationals): Hamstring, 10-Day IL
  • Josiah Gray (Washington Nationals): Elbow, 60-Day IL
  • Mason Thompson (Washington Nationals): Elbow, 60-Day IL
  • Trevor Williams (Washington Nationals): Elbow, 15-Day IL

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Our BetMGM editors and authors are sports experts with a wealth of knowledge of the sports industry at all levels. Their coverage includes sports news, previews and predictions, fun facts, and betting.