Troy Tulowitzki left Wednesday night's game against the Astros in the seventh inning with what the team said was a strained left groin. The Rockies shortstop appeared to suffer the injury while running out an infield ground out in the bottom of the sixth inning. Tulowitzki is scheduled to be re-evaluated on Thursday. "We don't know anything more than just that. We just have to wait and see to what extent," manager Jim Tracy said.