Troy Tulowitzki was diagnosed with a broken rib in his right side after an MRI on Thursday night and will be headed to the disabled list.Tulowitzki left Thursday’s game with Washington in the eighth inning after diving for a ground ball.Earlier today we reported that Carlos Gonzalez had taken a foul ball off the bat of Jordan Pacheco and left the same game. Dexter Fowler was hit on the right ring finger and suffered a swollen knuckle. Both Gonzalez and Fowler should be fine and not miss much time.Tulowitzki is another story however as rib injuries are often very difficult and could take several weeks to heal.“The ribs have been a lingering problem for him. When he came off the field, it was very evident he was done,” said manager Walt Weiss, admitting he was concerned about a potential extended absence.Tulowitzki is hitting .347 with 16 home runs and 51 RBI for Colorado. He missed four months of the 2012 season following a left groin injury that eventually required surgery to remove scar tissue.