The Colorado Rockies dropped the opening game of their three-game home series against the NL West leading Arizona Diamondbacks by a 10-7 score. A four-run rally in the ninth inning fell short as Arizona had built their big lead on the strength of a five run sixth. Justin Upton and Geoff Blum homered to lead Arizona’s offensive attack in the win. For the Rockies, Dexter Fowler hit a pair of home runs, and Mark Ellis and Troy Tulowitzki also homered. Tulo’s three-run dinger in the ninth brought his RBI total for the season to 100, the first time he’s reached that milestone in his career. The Rockies have now lost seven of their last ten games. They’ll try again against the D-Backs tonight in Denver, with Jason Hammel getting the start for the Rox against Josh Collmenter. First pitch is at 7:40.