Nationals vs Diamondbacks Prediction 5/31/25 MLB Picks Today

The Washington Nationals are visiting the Arizona Diamondbacks on Saturday, May 31^st at the Petco Park in the second game of this series, with the Nationals having the 1-0 lead. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Nationals vs Diamondbacks Prediction. We will examine:

The Arizona Diamondbacks recent form and player performance

The Washington Nationals recent form and player performance

Recent betting trends and streaks involving the Arizona Diamondbacks

Recent betting trends and streaks involving the Washington Nationals

Recent betting trends in games played between the Washington Nationals vs Arizona Diamondbacks

A summary that ties it all together and produces a favorable betting outcome for Washington Nationals vs Arizona Diamondbacks game

Arizona Diamondbacks Preview

The Arizona Diamondbacks have a 27-30 record this season and are sitting on the 4^th place of the NL West. The Diamondbacks have a 14-16 home record and are 25-27 in over/under They are coming off a 7-9 home defeat by the Nationals, and are 1-8 in their last 9 games. Over is 4-1-1 in their last 6 games, and are playing the Braves and the Reds next.

The Diamondbacks have a .256 batting average this season, .332 OBP and .445 slugging percentage. Arizona’s pitching staff has a 4.77 ERA and 1.34 WHIP. Josh Naylor leads the Diamondbacks with 64 hits, and he is the team’s best hitter with a .298 batting average. Eugenio Suarez leads the team in RBI, with 42 and Corbin Carroll adds a team-high 16 home runs.

Brandon Pfaadt (R) will take the mound for the Diamondbacks, and he has a 7-3 record, 3.90 ERA and 1.22 WHIP. He has been excellent at home, with a 1.78 ERA across five home starts, but he has been in poor form lately, having given up 3+ runs in four of his last five starts. In his previous start against the Nationals this season, he gave up 4 runs in 6 innings of work.

Washington Nationals Preview

The Washington Nationals have a 27-30 record this season and are sitting on the third place of the NL East. The Nationals have a 14-16 road record and are 28-27 in over/under They are coming off a 9-7 road victory over the Mariners, and have three consecutive wins. Over is 4-0 in their last 4 games, and are playing the Cubs and the Rangers next.

The Nationals have a .243 batting average this season, .311 OBP and .396 Slugging percentage. Washington’s pitching staff has a 5.01 ERA and 1.40 WHIP. James Wood leads the Nationals with 62 hits, 43 RBI and a team-high 16 home runs while being the team’s best hitter with a .287 batting average.

Michael Soroka (R) will take the mound for the Nationals, and he has a 1-3 record, 5.61 ERA and 1.21 WHIP. He has a 5.52 ERA across three road starts, and he has been struggling this season, having given up 3+ runs in four of his five starts. Michael Soroka has a record of 0-1 with an ERA of 3.93 and 16 strikeouts in 4 appearances against the Diamondbacks in his career.

Why the Arizona Diamondbacks will win

• The Nationals have lost five of their last six night games against NL West opponents following a road win.
• The Diamondbacks have won four of their last five night games at Chase Field following a loss.
• The Nationals have failed to cover the run line in six of their last seven night games against the Diamondbacks following a win.
• The Diamondbacks have covered the run line in four of their last five night games at Chase Field following a loss.
• The Diamondbacks have led after 3 innings in five of their last six home night games.
• The Nationals have lost the first inning in each of their last three games at Chase Field against National League opponents that held a losing record.
• The Diamondbacks have led after 5 innings in five of their last six night games against opponents that held a losing record.

Why the Washington Nationals will win

• The Nationals have won each of their last six games as road underdogs after playing the previous day.
• The Diamondbacks have lost four of their last five games as favorites.
• The Nationals have covered the run line in each of their last nine games as underdogs against NL West opponents.
• The Diamondbacks have failed to cover the run line in each of their last seven games as home favorites against the Nationals following a loss.
• The Nationals have led after 3 innings in eight of their last 10 games as underdogs against NL West opponents.
• The Nationals have won the first inning in three of their last four games against the Diamondbacks.
• The Nationals have led after 5 innings in seven of their last nine games as underdogs against NL West opponents.

Total Runs Facts

• Each of the Nationals’ last six road games have gone OVER the total runs line.
• Each of the last six games between the Nationals and Diamondbacks at Chase Field have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the last 10 night games between the Nationals and Diamondbacks.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Nationals’ last six night games at Chase Field.

Matchup/League Facts

• The Diamondbacks rank 1st in the league for doubles this season (114).
• The Diamondbacks rank 4th in the league for slugging percentage this season (.445).
• The Nationals rank 26th in the league for ERA this season (5.01).
• The Nationals rank T6th in the league for steals this season (54).

Nationals vs Diamondbacks Prediction

The Nationals have won their last three meetings against the Dbacks, but the Dbacks have won their previous five meetings before that. The Dbacks are 3-1 in their last 4 meetings in Arizona, and over is 6-1 in their last 7 meetings.

In this Nationals vs Diamondbacks Prediction, the Diamondbacks are coming as -200 home favorites. Both teams have identical records, and home/away splits, so this line clearly overvalues the Dbacks, who have been on a free fall lately, with just one win in their last 9 games. The line screams take the Nationals, but I would rather not mess with those two volatile pitchers.

Pfaadt has an expected ERA of 6.39, and Soroka has been terrible this season. Both bullpens are bottom-4 in the league, with a combined 11.51 ERA, and both teams are better against righties, averaging 10 runs combined against right-handed pitching. Yesterday’s game had 16 total runs and I expect another high-scoring affair today. Take the over 9 in this one.