Box score

SCOTTSDALE, Ariz. -- Ben Paulsen's home run on the first pitch of the bottom of the ninth inning off D-backs reliever Jonathan Albaladejo gave the Rockies a 6-5 victory over Arizona on Monday afternoon in a Cactus League game at Salt River Fields at Talking Stick.

Both starters -- projected to be key rotation members -- teetered thanks to some iffy defense.

Colorado's Jhoulys Chacin gave up three runs, but the two first-inning runs were unearned because of errors committed by Chacin and first baseman Chad Tracy. Chacin yielded Gerardo Parra's first-pitch homer in the second inning, and finished with one strikeout and one walk in two total innings.

The D-backs' Daniel Hudson gave up three runs, but one was unearned.

Spring Training
• Spring Training schedule

Spring Training
• Spring Training schedule

Chacin concentrated on fastball command, and figured Parra's homer came because he knew what was coming.

"I threw a fastball in," Chacin said. "I'd thrown three or four pitches and got two outs, so I figured I was going to keep attacking the hitter with the fastball. I don't worry about that. I worry about how I felt and my fastball command."

One of Hudson's runs was unearned because of Ryan Roberts' fielding error in the first. Hudson gave up three hits, struck out one and issued no walks.

"It was OK, it wasn't great, I left a couple of pitches up in the zone, but like I said first outing of the spring you're just looking for no pain and a lot of strikes," Hudson said.

Parra doubled and homered off Chacin, and made a diving catch in center field for the D-backs. Rockies third-base prospect Nolan Arenado delivered a run-scoring double off Hudson and drew a walk in his second plate appearance.

The Rockies intend to give a long look to Arenado, 20, the team's top-rated prospect according to MLB.com. Left-hander Christian Friedrich, the Rockies' top 2008 Draft pick, struck out two and gave up one hit in two scoreless innings.

Roberts homered off righty Joe Gardner, one of the pitchers the Rockies acquired from the Indians in return for former ace pitcher Ubaldo Jimenez, to open the top of the sixth.

Rockies up next: Rockies right-handed rotation hopefuls Guillermo Moscoso and Alex White will pitch Tuesday against the Cubs at HoHoKam Park in Mesa. Also, veteran third baseman Casey Blake is scheduled to make his Rockies Spring Training debut. Matt Garza is listed as the Cubs' starter.

D-backs up next: Left-hander Joe Saunders will make his Spring Training debut Tuesday as the D-backs play host to the Rangers at Salt River Fields. Left-hander Mike Zagurski is slated to follow Saunders to the hill and right-hander Evan Marshall is also scheduled to pitch. Marshall is rated the organization's 10th-best prospect by MLB.com.