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3/24/2013 1:00 A.M. ET

Hundley, Blanks homer as Padres drop slugfest

SCOTTSDALE, Ariz. -- Rockies catcher Wilin Rosario homered in his third straight game as Colorado beat the Padres, 10-4, Saturday night at Salt River Fields at Talking Stick.

Veteran first baseman Todd Helton launched a two-run shot to center in the first inning off Padres starter Freddy Garcia for his second homer of Cactus League play. Then Rosario, who homered off the Giants' Matt Cain on Thursday and the Rangers' Ben Rowen on Friday, took Garcia deep to left field on Saturday night.

Garcia, on the fringe of the competition for the Padres' rotation, didn't help his cause by giving up seven runs (three earned) on five hits and three walks in five innings.

"They were aggressive early in the count, especially when he elevated some pitches," Padres manager Bud Black said of Garcia. "They made solid contact and we didn't help Freddy defensively [two errors]."

Rockies second baseman Josh Rutledge led off the second inning with a homer off Garcia.

The Rockies scratched scheduled starter Jorge De La Rosa on Saturday afternoon because of left forearm tightness. Right-hander Jeff Manship started, pitched three innings, struck out three and gave up two runs on two hits -- Kyle Blanks' single, followed by Nick Hundley's homer in the second.

Righty Jhoulys Chacin, who was supposed to start Friday but was pushed back because of back spasms, made a two-inning appearance and gave up two solo shots. The first was in the fourth to Blanks -- who could break camp with the Padres if outfielder Carlos Quentin's knee injury forces him to the disabled list -- and the other was to non-roster invitee Cody Ransom in the fifth.

Reserve catcher Gustavo Molina added a fourth homer for the Rockies, connecting for a three-run shot off Brad Brach in the seventh.

Up Next: The Padres return to Peoria on Sunday for a 1:05 p.m. PT start to face the Brewers with coverage on MLB.TV. Left-hander Eric Stults, who will be the No. 4 starter in the rotation, is scheduled to start. He'll go between five or six innings. Closer Huston Street is also scheduled to throw. Hundley is scheduled to be in the starting lineup. He's had a big spring, hitting .429 and ranking second on the team in hits (18) in Cactus League play.

Thomas Harding is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.