Arizona Diamondbacks vs San Diego Padres Prediction 7/7/2026 Today’s MLB Picks

The Arizona Diamondbacks and the San Diego Padres meet Monday in MLB action from Petco Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s an Arizona Diamondbacks vs. San Diego Padres prediction.

Starting Pitching Matchup

The Arizona Diamondbacks will start Zac Gallen for the start here and Gallen is 3-8 with a 6.36 ERA and 56 strikeouts this season. German Marquez will start here for San Diego and is 3-2 with a 5.79 ERA and 20 strikeouts this season.

Arizona Diamondbacks Recap

The Arizona Diamondbacks come into this game looking to add on to their 8-0 win over the Padres from Monday to improve to 45-45 this season. After this series, the Diamondbacks will head home for a series against the St. Louis Cardinals.

Diamondbacks Alternate Wins & Losses In 4 Straight

Going into Monday, Corbin Carroll has 85 hits including 18 doubles, 10 triples, 13 home runs and 45 RBIs. Ketel Marte has 91 hits with 18 doubles, 17 home runs and 54 RBIs and Geraldo Perdomo has 73 hits, with 13 doubles, 3 triples, 5 home runs and 31 RBIs as well this season. Nolan Arenado also has 68 hits with 16 doubles, 9 home runs and 36 RBIs and Jose Fernandez has 42 hits with 3 home runs and 15 RBIs this season. Ildemaro Vargas also has 68 hits with 12 doubles, 2 triples, 7 home runs and 46 RBIs.

San Diego Padres Recap

The San Diego Padres will be out to shake off their loss at the hands of the Diamondbacks on Monday to slip to 44-46 this season. After this series, the Padres will take on the Toronto Blue Jays in a series at home.

Padres Drop 9 Of Last 10

Entering Monday, Jackson Merrill has 71 hits with 15 doubles, 10 home runs and 34 RBIs while Ramon Laureano has 37 hits with 6 doubles, 2 triples, 7 home runs and 21 RBIs as well on the year. Fernando Tatis Jr. has 98 hits with 18 doubles and 34 RBIs and Xander Bogaerts has 68 hits with 7 doubles, 8 home runs and 33 RBIs. Manny Machado also has 60 hits with 16 doubles, 18 home runs and 51 RBIs as well on the year.

Arizona Diamondbacks @ San Diego Padres Betting Trends: July 7, 2026

• Probable Starting Pitcher: German Marquez      Record this season: 3-2      ERA: 5.79
• Home Record: 1-2
• Last 5 against Diamondbacks: 2-0

Why the San Diego Padres will win

• The Padres have won eight of their last nine night games against the Diamondbacks at Petco Park following a home loss.
• The Diamondbacks have lost each of their last four night games at Petco Park following a win.
• The Padres have covered the run line in each of their last six games as favorites against NL West opponents following a loss.
• The Diamondbacks have failed to cover the run line in four of their last five games at Petco Park.
• The Diamondbacks have trailed after 5 innings in four of their last five games at Petco Park.
• The Diamondbacks have trailed after 3 innings in seven of their last nine road games against opponents that held a losing record.

• Probable Starting Pitcher: Zac Gallen      Record this season: 3-8      ERA: 6.36
• Road Record: 0-4
• Last 5 against Padres: 2-1

Why the Arizona Diamondbacks will win

• The Diamondbacks have won each of their last eight night games against National League opponents following a road win.
• The Padres have lost each of their last seven night games against National League opponents.
• The Diamondbacks have covered the run line in each of their last 12 games as road underdogs against NL West opponents following a win.
• The Padres have failed to cover the run line in 10 of their last 11 games as favorites after playing the previous day.
• The Diamondbacks have won the first inning in five of their last six night games against the Padres.
• The Diamondbacks have led after 5 innings in each of their last four games as road underdogs against NL West opponents.
• The Diamondbacks have led after 3 innings in each of their last four games as road underdogs against NL West opponents.

Total Runs Facts

• Thirteen of the Diamondbacks’ last 14 road games after playing the previous day have gone UNDER the total runs line.
• Each of the Padres’ last four games have gone UNDER the total runs line.
• There has been at least one run scored in the first inning in each of Zac Gallen’s last six road appearances as a starter.
• There has been at least one run scored in the first inning in each of the last six night games between the Diamondbacks and Padres.

San Diego Padres Player Prop Facts

• Luis Campusano has hit a home run in three of his last four appearances with the Padres as favorites against NL West opponents.
• Xander Bogaerts has recorded at least one hit in each of his last eight home appearances against the Diamondbacks.
• Fernando Tatis Jr. ranks T6th in the league in Steals (21) this season.

Arizona Diamondbacks Player Prop Facts

• Geraldo Perdomo has hit a home run in each of the Diamondbacks’ last two road games against opponents that held a losing record.
• Zac Gallen has recorded a win in four of his last five appearances against NL West opponents that held a losing record.
• Zac Gallen has recorded four or more strikeouts in 27 of his last 28 appearances against NL West opponents that held a losing record.
• Geraldo Perdomo has recorded at least one hit in each of the Diamondbacks’ last 15 road games against NL West opponents.
• Corbin Carroll is one of only two players to record 10+ Home Runs and 4+ Triples this season.

Matchup/League Facts

• The Padres rank 30th in the league for runs scored this season (348).
• The Padres rank 30th in the league for hits this season (662).
• The Diamondbacks rank 30th in the league for strikeouts this season (616).
• The Diamondbacks rank 29th in the league for home runs this season (82).

Arizona Diamondbacks vs. San Diego Padres Prediction

I’m on the over in this game. I know that both offenses have been so hard to back in a lot of their recent games. However, Zac Gallen’s been brutal on the road this season and the Padres are far more convincing against righties at the plate, while German Marquez is a fringe option at best on the mound for San Diego and the bats for Arizona came alive in a big way in the opener on Monday. I’ll back the over here.

Chris Ruffolo's Pick: Over 9