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MLB · Final

Diamondbacks Defeat Padres 3-1 in Key Matchup

Thursday, July 9, 2026, 9:40 PM ET · Petco Park

Arizona Diamondbacks 3, San Diego Padres 1, final. Our MLB picks are sealed as a hash before kickoff and settled in public, losses included.

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Quick answers

Who won Arizona Diamondbacks vs San Diego Padres?

Arizona Diamondbacks beat San Diego Padres 3-1 at Petco Park on July 9, 2026.

Who was favored in Arizona Diamondbacks vs San Diego Padres?

San Diego Padres were the favorite at DraftKings, moneyline -131 (about 57% implied). The underdog won.

In a tightly contested game, the Arizona Diamondbacks triumphed over the San Diego Padres with a final score of 3-1 at Petco Park. This victory allowed the Diamondbacks to maintain their competitive edge in the series, which is now tied at 2-2. Both teams entered the game with identical records of 46-47, making this matchup particularly significant as they vie for better positioning in the league.

The Padres have struggled recently, holding a record of 3-7 over their last ten games. Despite this rough patch, they managed to secure back-to-back wins against the Diamondbacks in their previous two meetings, winning 10-4 and 4-1 on July 8 and 9, respectively. However, their overall performance has seen them average 4.3 runs scored per game while allowing 6.0 runs, indicating defensive vulnerabilities. At home, the Padres have a record of 3-2 in their last five games, with an average of 3.4 runs scored and 4.0 runs allowed.

On the other side, the Diamondbacks have been slightly better, posting a 4-6 record in their last ten games. They have averaged 4.1 runs scored and allowed 4.5 runs during this stretch. However, they are currently on a two-game losing streak, having lost to the Padres in their last two encounters. Their recent form has seen them struggle on the road, with a record of 1-4 in their last five away games.

In terms of head-to-head matchups, the Padres have a slight advantage with a 10-6 record against the Diamondbacks in their last 16 meetings. This includes their recent victories, but the Diamondbacks' win today could shift momentum back in their favor. The last time these teams met prior to this series, the Diamondbacks won decisively 8-0 on July 7.

Injuries have also played a role in shaping the teams' dynamics. The Padres are currently dealing with several significant injuries, including Jason Adam (60-Day IL, Shoulder), Miguel Andujar (10-Day IL, Wrist), Gavin Sheets (10-Day IL, Foot), Jeremiah Estrada (15-Day IL, Shoulder), and Lucas Giolito (60-Day IL, Elbow). The Diamondbacks are not without their challenges either, with Tommy Troy (10-Day IL, Shoulder), Ryne Nelson (60-Day IL, Elbow), Zac Gallen (60-Day IL, Elbow), Michael Soroka (15-Day IL, Shoulder), and Corbin Burnes (60-Day IL, Elbow) all unavailable.

The betting market, as provided by DraftKings, had the Padres favored at -131 on the money line, with a spread of -1.5 and a total set at 9.0 runs. The odds for the over were -106, while the under was priced at -113. This indicates a competitive expectation for the game, reflecting the closely matched records of both teams.

Game conditions were typical for a summer evening in San Diego, with the atmosphere buzzing as fans filled the stands at Petco Park. The Padres were looking to capitalize on their home advantage, but the Diamondbacks' resilience proved decisive.

Key moments in the game included a home run by Manny Machado in the second inning, giving the Padres an early lead. However, the Diamondbacks responded effectively, with Max Kepler scoring on a wild pitch by Padres pitcher Canning in the fourth inning, leveling the score. They took the lead in the fifth inning with a single from Perdomo, allowing Troy to score. Nolan Arenado then sealed the victory with a home run in the sixth inning, making it 3-1.

Viewers should note the impact of the injuries on both teams and how they may affect future matchups. The Padres will need to address their defensive issues, particularly as they prepare for the next games in the series. The Diamondbacks, with their recent win, will look to build on this momentum as they aim to take the series lead.

Odds

BookSpreadTotalMoneyline
DraftKingsSD -131 9 o -106 / u -113 Arizona Diamondbacks +108 · San Diego Padres -131

What these prices pay on $100 · What these numbers mean

Injury report

  • Jason Adam60-Day-ILShoulderSan Diego Padres
  • Miguel Andujar10-Day-ILWristSan Diego Padres
  • Gavin Sheets10-Day-ILFootSan Diego Padres
  • Jeremiah Estrada15-Day-ILShoulderSan Diego Padres
  • Lucas Giolito60-Day-ILElbowSan Diego Padres
  • Tommy Troy10-Day-ILShoulderArizona Diamondbacks
  • Ryne Nelson60-Day-ILElbowArizona Diamondbacks
  • Zac Gallen60-Day-ILElbowArizona Diamondbacks
  • Michael Soroka15-Day-ILShoulderArizona Diamondbacks
  • Corbin Burnes60-Day-ILElbowArizona Diamondbacks

Recent form

San Diego Padres

Last 10: 3-7Streak W24.3 scored · 6 allowed per game3-2 at home

  • W10-4vs Arizona DiamondbacksJul 9
  • W4-1vs Arizona DiamondbacksJul 8
  • L0-8vs Arizona DiamondbacksJul 7
  • L0-3at Los Angeles DodgersJul 5
  • L3-4at Los Angeles DodgersJul 4
  • L7-12at Los Angeles DodgersJul 3
  • L7-9at Chicago CubsJul 1
  • L2-3at Chicago CubsJun 30
  • L3-15vs Los Angeles DodgersJun 28
  • W7-1vs Los Angeles DodgersJun 27

Arizona Diamondbacks

Last 10: 4-6Streak L24.1 scored · 4.5 allowed per game1-4 away

  • L4-10at San Diego PadresJul 9
  • L1-4at San Diego PadresJul 8
  • W8-0at San Diego PadresJul 7
  • W4-3vs Milwaukee BrewersJul 5
  • L4-7vs Milwaukee BrewersJul 4
  • L4-6vs San Francisco GiantsJul 2
  • W8-2vs San Francisco GiantsJul 1
  • W5-4vs San Francisco GiantsJun 30
  • L1-5at Tampa Bay RaysJun 28
  • L2-4at Tampa Bay RaysJun 27

Standings

TeamGames behindLostStreakWin %Won
Los Angeles-57L2.59082
Arizona967W1.52574
San Diego9.567L2.52173
San Francisco24.582W1.41458
Colorado28.586W2.38654

How the scoring went

  1. 2nd Inning0-1Machado homered to right (368 feet).
  2. 4th Inning1-1Kepler scored on Canning wild pitch, Gurriel Jr. to second on wild pitch by Canning.
  3. 4th Inning1-1Kepler scored on Canning wild pitch, Gurriel Jr. to second on wild pitch by Canning.
  4. 5th Inning2-1Perdomo singled to center, Troy scored.
  5. 6th Inning3-1Arenado homered to left center (387 feet).

Win probability

Above the line favours San Diego Padres, below favours Arizona Diamondbacks.

Venue

  • Petco ParkSan Diego, California
  • Attendance39270
  • OfficialsWill Little, Ryan Wills, Lance Barksdale, Willie Traynor

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Fixture data from the league feeds. The report was written from the recorded facts for this game and nothing else.