DENVER – Adam Dunn had his first two Diamondbacks’ RBIs on Thursday and Dan Haren did what he seemingly always does.
Dunn’s two-run single capped a five-run fifth inning that included home runs by Chris Snyder and Chris Burke and Haren recorded his major league-leading 20th quality start in a 6-2 victory over Colorado at Coors Field.
Haren (13-6) gave up seven hits and tied a season high with nine strikeouts while lowering his ERA to 2.96. He also had two singles and scored a run.
“I thought early on, he might not have had his best stuff,” manager Bob Melvin said of Haren. “He doesn’t have to have his best stuff to pitch good games and get us deep in games.”
The D-Backs (62-59) assured themselves of another day in first place by winning their fourth straight series against Colorado. They are 10-2 against the Rockies this season, 5-1 at both fields.
The D-Backs have led or been tied for the lead in the NL West every day since April 6, the first time they were here this season.
Colorado starter Glendon Rusch limited the D-Backs to one hit until Mark Reynolds doubled to open the fifth.
Snyder hit his 11th homer one out later, and Burke followed with his first homer of the season.
Stephen Drew extended his career-long hitting streak to 16 games with a single before walks to Chris Young and Conor Jackson loaded the bases for Dunn, who singled to right off reliever Matt Herges.
“It’s nice to take some of the pressure off him while he’s settling in with his new team,” Melvin said. “It relaxes him some. He’s getting good at-bats.”