Arizona Diamondbacks vs San Diego Padres Picks and Prediction for Sunday September 27 2026
The Arizona Diamondbacks visit the San Diego Padres at Petco Park in San Diego, California, on Sunday, September 27, 2026. First pitch is scheduled for 3:10 PM ET with coverage on MLB.TV. Arizona enters at 86-74 overall and 41-38 on the road, while San Diego is 89-71 overall and 49-30 at home. The Padres sit second in the NL West, nine games behind Los Angeles, while Arizona is third, three games behind San Diego and 12 games out of first place. The Diamondbacks enter the weekend finale riding a six-game winning streak after crushing San Diego 11-4 in Friday's series opener. Saturday's game had not been completed when this preview was prepared and is excluded from the analysis. At the time of this writing the odds were not released. Be sure to check out our free MLB picks for more MLB predictions throughout the season.
Starting Pitchers
Arizona is scheduled to start Michael Soroka, who enters at 9-5 with a 3.31 ERA and 1.09 WHIP through 111.1 innings. He has allowed only 94 hits and nine home runs while recording 110 strikeouts against 27 walks. San Diego had not announced its starting pitcher when this preview was completed. Arizona therefore owns the more defined starting-pitching situation, and Soroka's numbers are impressive across the board. His combination of a low WHIP, limited walks and only nine home runs allowed gives the Diamondbacks a strong foundation. San Diego's eventual starter will be important when determining the final value on both the side and total.
Diamondbacks Bring a Six-Game Winning Streak Into Sunday
Arizona enters at 86-74 and is playing some of its best baseball of the season. The Diamondbacks have won six consecutive games, including an 11-4 victory over San Diego in Friday's series opener. Before arriving at Petco Park, Arizona swept three games at Colorado by scores of 12-8, 5-3 and 7-2. The Diamondbacks also defeated New York 8-4 in their previous completed game. Arizona has scored an impressive 43 runs across its last five contests, averaging 8.6 runs per game.
The Diamondbacks are batting .246 with 728 runs, 1,323 hits and 165 home runs. Arizona has produced a .318 on-base percentage and .403 slugging percentage. Its pitching staff owns a 4.10 ERA and 1.27 WHIP with 1,125 strikeouts against 473 walks while allowing opponents to bat .248.
Arizona's recent offensive surge is the biggest reason to take this matchup seriously despite San Diego's excellent home record. The Diamondbacks have scored 25 more runs than the Padres this season while owning advantages in batting average and slugging percentage. Arizona has also been slightly better at limiting baserunners, carrying a 1.27 WHIP compared with San Diego's 1.29. The power numbers favor the Padres, but Arizona's recent ability to string together hits and consistently generate runs has made the Diamondbacks extremely dangerous.
Padres Look to Respond After Friday's Blowout Loss
San Diego enters Sunday at 89-71 overall and remains one of the better home teams in baseball at 49-30. The Padres have gone 3-2 across their last five completed games, but Friday's 11-4 loss to Arizona ended a two-game winning streak. San Diego previously defeated Los Angeles 4-2 and 5-1 after suffering a 7-0 loss against the Dodgers. The Padres also defeated Miami 7-3.
San Diego is batting .243 with 703 runs, 1,290 hits and 180 home runs. The Padres own a .318 on-base percentage and .397 slugging percentage. Their pitching staff has produced a 3.97 ERA and 1.29 WHIP with 1,299 strikeouts against 547 walks while limiting opponents to a .241 batting average.
Pitching and power remain San Diego's primary statistical advantages. The Padres have hit 15 more home runs than Arizona, and their 3.97 team ERA is slightly better than the Diamondbacks' 4.10. San Diego has also held opponents to a lower batting average. The concern is the current matchup against an Arizona offense that has suddenly become extremely productive. The Padres surrendered 11 runs Friday and now face a scheduled Arizona starter carrying a 3.31 ERA and 1.09 WHIP.
Arizona Diamondbacks vs San Diego Padres Picks and Prediction
Pick: Arizona Diamondbacks Moneyline
Arizona gets the moneyline selection based on its combination of current form and the known starting-pitching matchup. The Diamondbacks have won six consecutive games and have scored 43 runs across their last five, including 11 against San Diego on Friday. Their scheduled starter enters at 9-5 with a 3.31 ERA and excellent 1.09 WHIP while allowing only nine home runs through 111.1 innings. San Diego is extremely dangerous at Petco Park with a 49-30 home record and owns the slightly better season-long ERA, so this is not a comfortable fade of the Padres. However, Arizona's offense is producing at an exceptional level, and the Diamondbacks have the clearer starting-pitching advantage until San Diego announces its starter. Arizona is the preferred side at the current stage of the handicap.
Pick: Over 8.0 or Lower
The recent offensive production pushes the total toward the over if the market posts 8.0 or lower. Arizona's last five completed games have produced combined totals of 15, 20, eight, nine and 12 runs, with the Diamondbacks themselves averaging 8.6 runs during that span. Friday's series opener finished with 15 runs. Arizona's scheduled starter has excellent numbers and could limit San Diego, but the Padres still average more than four runs per game for the season and have scored at least four in four of their last five. San Diego's undecided starter adds uncertainty on the other side, particularly against the hottest offense in this matchup. At eight or lower, the possibility of another productive Arizona performance creates enough upside to support the over.
Final Picks: Arizona Diamondbacks Moneyline and Over 8.0 or Lower
This preview was completed on Saturday, September 26, 2026. Starting pitchers, betting lines and other game information are subject to change before the game begins.