PHOENIX -- Arizona Diamondbacks left-hander Patrick Corbin has taken the baseball world by storm, but neither he nor his manager consider it anything out of the ordinary.
"I knew I could come in and go after these guys and compete," Corbin said Thursday after leading the Diamondbacks to a 2-1 win over the Philadelphia Phillies. "I mean, I didn't know this start would be like this, but I'm not surprised at all. I just want to continue it going. A lot of starts left. I just want to make sure I learn something and improve."
Corbin (5-0) gave up one run in 6 1/3 innings to become the only pitcher in the majors to pitch at least six innings and give up two runs or fewer in his first seven starts this season. He also broke a scoreless tie with an RBI groundout in the fifth.
"We're not surprised," D-backs manager Kirk Gibson said. "That's why he's on the team. We have total confidence in him. He's thrown the ball this way all year."
Corbin allowed four singles and two walks while striking out four. His ERA is 1.75. He is the first D-backs pitcher to win his first five decisions since Brandon Webb started 9-0 in 2008.
Gerardo Parra had two hits, an RBI and two assists to help the D-backs (20-15) win their fourth straight and move into a tie with the San Francisco Giants for the NL West lead. Philadelphia (16-20) has lost four of its last six.
Parra drove in a run with a well-placed bunt for a 2-0 lead in the sixth inning, and he blunted a Philadelphia rally in the seventh on his second assist of the game.
Phillies pinch hitter Kevin Frandsen dropped a soft line drive into right field with one out and the bases loaded to drive in a run, but Parra fielded the ball quickly and threw to second to force out John Mayberry. Arizona reliever Matt Reynolds induced a popout to end the inning.
"I was playing a little in, and the guy running from first base went back. Didi (Gregorius, the shortstop) called me, and I threw it to second," Parra said.
Philadelphia manager Charlie Manuel said, "It looked to me that the right fielder did a helluva job coming that far and throwing him out. It was just dunked over the second baseman's head. (Mayberry) might not have read it."
Arizona's Cody Ross doubled to open the sixth off Cole Hamels (1-5) and scored on Parra's bunt toward first base with runners on first and third and one out for a 2-0 lead.
Hamels, who allowed the two runs in six innings, lost despite making his sixth consecutive quality start. He gave up six hits and five walks while striking out three.
"I am just not executing when I need to," said Hamels, whose ERA is 4.18. "That is my biggest issue so far, the walks. Putting myself in bad counts to where I am giving the opposing team and obviously the hitters opportunities to get hits."
Domonic Brown and Delmon Young had two hits apiece for Philadelphia, but Young was thrown at second by Parra attempting to stretch his single in the second inning.
Martin Prado and Gregorius each had two hits for the D-backs, who got their third save in as many days from Heath Bell. Bell took over the as the closer following J.J. Putz's elbow injury.
Corbin gave the D-backs a 1-0 lead in the fifth inning, when he drove in Prado from third base on a one-out grounder to shortstop. Prado and Parra singled to open the fifth, and both moved up on a grounder to the mound before Corbin's RBI.
NOTES: Charlie Manuel managed his 1,332nd game for the Phillies, breaking a tie with Gene Mauch for the most in franchise history. "It will feel a lot better if we win," Manuel said before the game. Manuel has 743 victories, the most in franchise history. Mauch had 545 victories. ... Putz was diagnosed with a sprained right ulnar collateral ligament that will not require surgery, Gibson said prior to the game. Putz had an MRI exam Wednesday. "We'll shut him down for a couple of weeks and see how it calms down. It could have been a lot worse," Gibson said. Putz was removed from a game Tuesday in Los Angeles after throwing four balls to the only batter he faced. ... The Phillies will recall RHP Tyler Cloyd from Triple-A Lehigh Valley to start Friday's game against Arizona. Cloyd was 1-3 with a 5.40 ERA in six starts after going 2-2 with a 4.91 ERA in six starts with the Phillies last season. RHP Ian Kennedy (1-3, 5.19 ERA) will start for Arizona.