Musgrave, with his fastball, slider and changeup all working, lapsed only in the second inning, when Nick Hundley lined a two-out single. The left-hander, who pitched at Double-A Hartford and Triple-A Albuquerque last season and has not yet made his Major League debut, trimmed his Cactus League ERA, from 4.50 to 3.27.
"It was pretty neat; I'd never started a big league Spring Training game," said Musgrave, an eighth-round pick out of West Virginia in 2014. "But it's just like any other game. Relieving or starting, you've still got to throw to the same batters."
Colorado manager Bud Black has said that with veteran lefty Chris Rusin touch and go because of an injured right oblique, there is a chance for one of the younger starting candidates in the bullpen.
"I'm one of those guys that's easy to get along with," Musgrave said. "My goal is to make the big league club in any way I can."
Unlike other candidates, who have greater velocity, Black said of Musgrave, "The more you watch him, the more you appreciate how he goes about it. He's attacking. That's what I like. He's taking the fight to the hitter."
The Rockies added a run in the third, on Cardullo's RBI double. The Giants got on the board in the seventh on a run-scoring groundout by Hundley.
Rockies Up Next: Righty Antonio Senzatela has thrown scoreless ball in five of his six Cactus League outings, which has made him a candidate for the season-opening rotation -- even though his highest experience level is seven Double-A starts last season. His bid continues against the Angels at Tempe Diablo Stadium on Saturday at 2:05 p.m. MT. Closer Greg Holland is expected make his second spring appearance, righty Jason Motte hopes to rebound from a rough last outing and Jairo Diaz will make his first spring appearance since sustaining an elbow injury last year that required Tommy John surgery.
Giants Up Next: The Giants and Mariners will face each other for the first time this spring when they collide on Saturday in a 1:10 p.m. PT encounter. San Francisco left-hander Matt Moore will oppose Seattle's Hisashi Iwakuma.