Marquez covered five scoreless innings in his start against the Giants Triple-A lineup Monday, allowing two hits and two walks while striking out six batters.
Though the 22-year-old wasn't facing high-caliber competition, he made another compelling case for a spot in the big-league rotation to begin the season, as he was working on a no-hitter through the first four innings of his outing. Marquez's fantasy appeal remains somewhat limited while he calls Coors Field his home park, but his strong spring seems to have put him ahead of fellow prospect Antonio Senzatela and the injured Chris Rusin (oblique) in the competition for the No. 5 starting role.