Corbin (5-0) pitched 6 1/3 innings, scattered four hits and allowed just one run to lower his ERA to 1.75. He became the first pitcher to throw at least six innings and allow two or fewer runs in his first seven starts of the season since Ubaldo Jimenez had 12 straight such outings for the Colorado Rockies in 2010. Dan Haren had held the Diamondbacks mark with six such starts in 2009.
"I knew if I could come in and go after these guys and compete, I didn't think the start would be like this, but I'm not surprised at all," Corbin said. "Last year, I learned I could pitch in this league, and I'm taking it to this league. Every time I go out there, I want to keep the team in the ball game, eat up some innings and give them a chance to win."
The left-hander needed only 89 pitches and didn't allow a runner to reach third base.
"They had a lot of lefties in the lineup today, so a big thing was getting ahead, throwing inside and making them feel uncomfortable," Corbin said. "One thing that I've learned is if you can locate your heater, everything else is better."
The 23-year-old Corbin, who won the fifth spot in the rotation in spring training, has turned into the Diamondbacks' unlikely ace, though manager Kirk Gibson isn't surprised.
"We're not surprised. That's why he's on the team," Gibson said. "We've got complete confidence in him. He's thrown the ball this way all year. He's got a great head on his shoulders. He's a total pitcher, total ballplayer."
Heath Bell pitched a scoreless ninth, retiring the side with one hit on seven pitches, for his third save in as many nights since taking over for injured closer J.J. Putz.
The Diamondbacks matched a season high with their fourth straight win.
Phillies manager Charlie Manuel set a franchise record with his 1,332nd game as the club's skipper. The 69-year-old Manuel, the 51st manager in the team's 123-year history, passed Gene Mauch, who managed Philadelphia from 1960 to 1968.
Cole Hamels (1-5) saw his control disappear for the second time in three games. Hamels gave up two runs on six hits, walked five and struck out three in six innings. Hamels walked six two starts ago, on April 28 against the New York Mets.
"I'm just not executing when I need to," Hamels said. "That's my biggest issue so far -- the walks. For me, it's just to be able to go out, execute pitches and stop the walks. I have to correct what I can correct, and that's what's going to make me a better player."
After trading zeros with Hamels through the first four innings, Corbin gave the Diamondbacks a 1-0 lead in the fifth. After Martin Prado and Gerardo Parra started the inning with consecutive singles and Cliff Pennington hit a soft bouncer back to Hamels to move the runners up a base, Corbin drove in Prado on an RBI groundout to short.
Arizona made it 2-0 in the sixth. Cody Ross doubled to left, Miguel Montero walked and Prado reached on a fielder's choice, with Ross moving to third on the play. Parra's hard drag bunt along the first-base line allowed Ross to sprint home.
"In that situation, there's one out and you have a chance for everything," Parra said. "It was something to get a run."
Philadelphia rallied in the seventh, though the comeback was short-circuited by some poor base running.
Delmon Young reached on an infield single and was forced at second on a fielder's choice by Domonic Brown. Carlos Ruiz then looped a single to center to end Corbin's night, and pinch-hitter John Mayberry greeted Matt Reynolds with a line-drive single to left to load the bases.
Pinch-hitter Kevin Frandsen followed with what should have been a bloop single to right, but Mayberry, unsure if the ball was going to be caught by Parra, hesitated between first and second and was forced out at second on an excellent throw by Parra.
Rollins then hit a pop fly into short left that Didi Gregorius caught over his shoulder to end the inning.
"It was a softly hit ball that I'm looking at the second baseman in pursuit (of)," Mayberry said. "I thought he might have a play on it when he lunged at it at the last second. I kind of took a giant step back, and that ultimately ended up costing me second base."
NOTES: Parra also threw out Young trying to stretch a single into a double in the second. ... Gregorius has hit safely in 11 of 12 games this season. ... Before the game, manager Kirk Gibson said Putz will not need surgery on his strained right elbow. Putz was placed on the 15-day disabled list Wednesday with what was revealed by an MRI exam to be a sprained UCL ligament and irritated nerve. Putz was sidelined by a similar injury in 2011, missing four weeks. ... Diamondbacks 2B Aaron Hill, out since April 9 with a broken hand, has been ordered by team doctors to keep his soft cast on for another week after Hill experienced pain when he tried to pick up a bat. Hill visits the doctor again Sunday and will have a CT exam performed on Monday. ... Phillies RHP Tyler Cloyd will make his first start of the season Friday against RHP Ian Kennedy and the Diamondbacks. Cloyd, who is taking the rotation spot of injured ace Roy Halladay, was 1-3 with a 5.40 ERA in six appearances for Triple-A Lehigh Valley after going 2-2 in six starts for the Phillies late last season. Kennedy is 1-0 with a 1.06 ERA in two career starts at Chase Field against Philadelphia.