Garcia tossed three scoreless innings to help the Yankees beat the Braves 5-4 in front of a packed house at Disney World's Champion Stadium on Tuesday.
Garcia struck out two while extending his spring scoreless streak to five innings over two starts.
"I feel pretty good, man," he said. "So far, so good. That's the way I have to pitch if I want to win the spot. Throw strikes. Be aggressive. Made the pitches when I need it."
Garcia, Nova, Colon and Mitre are competing for two rotation openings behind CC Sabathia, Phil Hughes and A.J. Burnett. Mitre pitched three scoreless innings Monday night, and the four competitors for the final slots have allowed a run in 20 innings this spring.
"There's no separation," Girardi said. "They're going about their business the right way."
Girardi said the rotation won't be finalized until near the end of spring training. Garcia, the only one of the four who was a full-time major league starter in 2010, has said he would only blame himself if he didn't win one of the jobs.
Jurrjens said he feels he's progressing and finding his velocity on his fastball and slider after not being able to reach 90 mph with either in his previous outings.
"For me it's a relief," Jurrjens said. "[The velocity] is still there and I can reach back when I want to ... I feel like I'm making progress."