The Rockies used a stand-in for shortstop Troy Tulowitzki in Wednesday's team picture. If they could only photo-shop out his injuries this season. The two-time all-star suffered a setback in the first game of a rehab assignment with Triple-A Colorado Springs, aggravating his strained left groin in the third inning while running the bases. Tulowitzki isn't expected to travel with the Sky Sox to Las Vegas this weekend, further delaying his return to the Rockies. He had hoped to rejoin the team in Detroit on Sunday or in Philadelphia on Tuesday, but there's no timetable until he resumes his rehab assignment. "It scared him a little bit," said Rockies manager Jim Tracy. "We don't think it's anything serious."