Terrible news for the Rockies, who have faded after a hot start but are still in the thick of things in the NL West. Tulo has been dealing with rib soreness for a week and had to leave Thursday's game after aggravating the injury. He has had an MVP-caliber first half, batting .347/.413/.635 with 16 homers and 51 RBI. Josh Rutledge will likely be called up to handle shortstop.