Injured Colorado Rockies shortstop Troy Tulowitzki is trying to get back on the field before the end of the season, and he recently started more arduous workouts to help him get closer to that goal.
As part of his comeback from left groin surgery in June, shortstop Troy Tulowitzki went through his toughest day Friday, with a grueling set of movement exercises -- running and lateral movement, among others -- administered by head athletic trainer Keith Dugger at AT&T Park.
"We signed up for this because we want to be out there on the field, so just watching is tough," Tulowitkzi said.
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Tulowitzki hasn't played in a game for the Rockies since May 30.
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