That could be difficult this time around with the Padres improving outside San Diego.
Arizona continues its push for the NL West lead in Friday night's series opener.
After getting swept in their last series against San Diego (46-57) from June 14-16, the Diamondbacks (53-49) have dropped 15 of 21 in this divisional matchup, including six of nine in 2013. Arizona, though, won its second straight home series against the Padres from May 24-26, taking two of three in San Diego's lone visit this season.
The Diamondbacks, one-half game behind the West-leading Los Angeles Dodgers , continue their seven-game homestand after splitting four with the Chicago Cubs . Aaron Hill , out of the lineup the previous two games, went 2 for 4 with a homer and two RBIs in Thursday's 3-1 victory.
The Diamondbacks had dropped five of seven.
The Padres, meanwhile, are trying to build off their first road series win since May 14-15 against Baltimore. San Diego took three of four from Milwaukee after totaling 16 hits in Thursday's 10-8 victory.
The club is batting .300 and averaging 5.0 runs in the first seven games of its trip, which started with San Diego losing its 10th straight on the road.
"I think one of the biggest things for us is our ability to put pressure on pitchers, even if it's not with hits … just making them work hard," Yonder Alonso told the Padres' official website. "We've got the ability to really grind out some at-bats, and when you do that, good things happen."
Scheduled starter Randall Delgado (2-3, 3.43 ERA) has been making good things happen for the Diamondbacks.
The right-hander hasn't allowed more than three earned runs in any of his seven starts. Delgado prevented the Diamondbacks from dropping a fourth straight in his last outing, working around a season-high four walks and throwing 5 2-3 shutout innings in Sunday's 3-1 win at San Francisco.
"Delgado was a stopper today," Cody Ross told the Diamondbacks' official website. "He threw outstanding."
Delgado, though, could be out of the rotation after this start with Brandon McCarthy (right should inflammation) nearing a return.
Padres catcher Nick Hundley , 6 for 17 with two homers on the trip, should be back in the lineup after getting Thursday off.
Eric Stults (8-8, 3.45) gets the ball for San Diego in the opener. The left-hander was denied a career-best third consecutive winning start Sunday, but he delivered another quality performance, throwing six innings of three-run ball in a 3-2 loss to St. Louis.
"He ran into some longer innings but he did his thing," manager Bud Black said.
Stults will make his third start against the Diamondbacks this season. He allowed four runs in 6 1-3 innings of a 5-2 loss at Arizona on May 24, then threw a two-hitter in a 2-1 home win June 14.
Martin Prado , 6 for 17 off Stults, should be available after he was shaken up on a headfirst slide Thursday. Prado is batting .353 with five doubles against Padres pitching this season.
San Diego's Everth Cabrera is 14 for 35 with two homers and seven RBIs in the season series. No Padres player has faced Delgado.
|San Diego Padres|
|July 23, 2013||Carlos Quentin||Day-to-Day||Sore right wrist|
|July 20, 2013||Jason Marquis||15-Day DL||Strained right elbow|
|July 12, 2013||Kyle Blanks||15-Day DL||Left Achilles tendinitis|
|July 07, 2013||Yasmani Grandal||60-Day DL||Right knee sprain|
|June 22, 2013||Clayton Richard||60-Day DL||Left shoulder surgery - out for season|
|June 17, 2013||Everth Cabrera||15-Day DL||Strained left hamstring|
|July 09, 2013||Eric Chavez||Day-to-Day||Stiff right hip|
|July 01, 2013||Trevor Cahill||15-Day DL||Right hip contusion|
|June 28, 2013||Willie Bloomquist||15-Day DL||Left hand contusion|
|June 10, 2013||Matt Reynolds||15-Day DL||Strained left elbow|
|May 31, 2013||Brandon McCarthy||15-Day DL||Right shoulder inflammation|
|May 31, 2013||Eric Chavez||15-Day DL||Strained right oblique|
PHOENIX (AP) -- Randall Delgado tried almost too hard to make Arizona's rotation in spring training, tossing out mechanics as he overthrew.
A stint in the minors did wonders for the young right-hander, giving him the strike-throwing foundation that's allowed him to pitch so well since being called up.
Pounding the strike zone with his fastball and getting San Diego's hitters to chase his changeup, Delgado tossed a three-hitter for his first career shutout and the Diamondbacks pounded out 17 hits in a 10-0 rout over the Padres on Friday night.
"This is what he's been building up toward," Diamondbacks manager Kirk Gibson said.
The Diamondbacks gave Delgado plenty of support, roughing up Eric Stults (8-9) with six runs the first three innings and seven extra-base hits.
Aaron Hill had a pair of run-scoring doubles before leaving with a tight right hamstring, A.J. Pollock added a two-run single and Martin Prado had two of Arizona's six doubles.
Delgado (3-3) helped himself by adding a pair of singles, becoming the first Arizona pitcher with a shutout and a multihit game since Randy Johnson on Sept. 14, 2003, against Colorado.
"I thought he pitched really well tonight," Padres third baseman Chase Headley said. "They beat us in every aspect tonight and sometimes that happens."
One of the top pitching prospects in baseball, Delgado arrived in Arizona with Prado last year in a six-player deal that sent outfielder Justin Upton and infielder Chris Johnson to Atlanta.
Delgado failed to make Arizona's rotation out of spring training and opened the season at Triple-A Reno, where he worked on his mechanics and his strike-throwing mentality.
Since being called up in June, the 23-year-old Panamanian has been a solid addition to Arizona's staff, allowed three earned runs in all eight starts.
Delgado worked 5 2-3 scoreless innings his last start, a 3-1 win over San Francisco, and was even better against the Padres.
Everth Cabrera lined his first pitch of the game for a single, but the right-hander retired nine straight until Nick Hundley 's leadoff double in the fourth. Delgado stranded him at second and retired 10 straight before walking Yonder Alonso with one out in the seventh.
Right fielder Gerardo Parra made a spectacular catch against the fence to rob Will Venable of a hit to end the seventh and shortstop Didi Gregorious made a diving grab for the game's final out, helping Delgado extend his scoreless streak to 14 2-3 innings.
Delgado struck out three, walked one and threw 70 strikes in 100 pitches for his first complete game in the majors.
"This is a key for the pitchers, throw a lot of strikes, try to be ahead in the count," Delgado said. "That helped so much today. I was just trying to keep the ball down, throw a strike and see what happens after that."
Stults pitched well his previous three starts, allowing five earned runs in 21 innings, and tossed a two-hit shutout his last start against Arizona on June 14.
The Diamondbacks roughed up the left-hander right away Friday.
Hill drove in a run with a double in the first inning, then scored on Prado's run-scoring single.
In the second inning, Cliff Pennington scored from first when Hundley, San Diego's catcher, threw wildly to first on Delgado's sacrifice bunt and Hill followed with a second RBI double before leaving for precautionary reasons.
The Diamondbacks scored two runs again in the third inning, on Wil Nieves ' run-scoring through a drawn-in infield and an RBI double by Pennington that made it 6-0.
Ross added a run-scoring single in the fourth inning off Stults, who allowed seven runs - five earned - on 11 hits and struck out five.
"I didn't give us a chance to win from the start," said Stults, winless his last five road starts. "The first inning to give them the two runs, then in the second inning to not come out and give us a shut-down inning, that was tough."
Ross led off the seventh inning by hitting Colt Hynes ' up-in-the-zone 0-2 pitch off the foul pole in left for his sixth homer and Pollock made it 10-0 with his two-run single.
By then, Delgado was already rolling to his best outing in the majors.
NOTES: Arizona C Miguel Montero missed his fourth straight game with a stiff back and is still day to day. ... Alonzo went 0 for 3 to end an 11-game hitting streak at Chase Field, second-longest by a Padres player at Arizona's home field. ... LHP Tyler Skaggs , who will start Saturday against San Diego, is 0-1 and has allowed nine earned runs in eight innings in two career starts against the Padres. ... Padres RHP Andrew Cashner , Saturday's starter against Arizona, has not allowed a home run in eight straight starts.