Diamondbacks pitcher Brandon Webb throws against the Rockies in the first inning. Webb went 7 1/3 innings and struck out a season-high eight batters.

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PHOENIX — Mr. Automatic was at it again.

Backed by Stephen Drew's career-high four hits, Brandon Webb became the major leagues' first nine-game winner when the Arizona Diamondbacks defeated the Colorado Rockies 8-5 on Thursday night.

Webb (9-0) has won his first nine starts, the most since San Diego's Andy Hawkins won his first 10 in 1985, according to the Elias Sports Bureau. Webb has won 11 straight starts dating to last September.

"It's pretty amazing," Webb said. "It's getting to be amazing. Things are just happening."

A lot of things happened on a clear, 85-degree night in the desert.

Drew had two doubles, a triple, a single and an RBI, and Chris Snyder hit a three-run homer as the Diamondbacks improved to a major league-best 26-15, including 20-5 against the NL West.

Arizona overcame a season-high four errors to complete its second three-game sweep of the Rockies this season. The Diamondbacks are 8-1 against the defending NL champions, with Webb winning three times.

Mixing curveballs and changeups with his trademark slider, Webb had the Rockies off stride for most of the night.

"Nothing was in the middle," Colorado manager Clint Hurdle said. "The breaking ball was sharp and down; the change-up was a good pitch. The sinker had good late life."

Arizona manager Bob Melvin lifted Webb with one out in the eighth after Matt Holliday singled to make it 5-3. Webb, who threw 111 pitches, left to a standing ovation from the Chase Field crowd of 21,447.

He allowed three runs on six hits, walked one and struck out eight, a season high.

"Doing his thing again," Melvin said. "He got a little tired at the end."

Webb credited his offense for giving him plenty of support — and none had a better night than Drew.

He singled in the first, tripled in the third and doubled in the fifth against Colorado starter Aaron Cook. Drew had two chances at the cycle — doubling in the sixth off Josh Newman and reaching on an error against Brian Fuentes in the eighth.

"He's swinging it better than anybody we have right now," Melvin said. "He's been quite the force for us."

Colorado's Aaron Cook (6-2) was almost as hot as Webb. He had won a franchise-record six straight starts, a streak that began April 13 at Chase Field.

Cook pitched five innings, his shortest outing, and allowed a season-high five runs on 10 hits. He walked four and struck out six.

Even with an 8-3 lead heading into the ninth, Webb had to sweat out a little drama before he could claim the victory.

The Rockies loaded the bases with no outs against Brandon Medders before Brandon Lyon came on to record his 12th save in 14 chances, and his 11th in a row.

Lyon gave up an RBI single to Scott Podsednik to make it 8-4, and Ryan Spilborghs' sacrifice fly made it 8-5.

But Lyon struck out Barmes and retired Holliday — who had cost Lyon a save with a homer in Denver last month — on a grounder to third to end it.