The Colorado Rockies hope they can build off of their third walk-off victory of the season as they face the Florida Marlins for the second game of their three-game series tonight at Coors Field. The Rockies opened the series with a bang last night, as Jason Giambi’s three-run home run with two outs in the ninth inning lifted the Rockies to a 7-4 win. It was the first time a Rockies player had hit a walk-off homer this season. Jhoulys Chacin will take the mound for the Rockies tonight to try and become the first Rockies starter to double-digit wins this season. The righty is 9-9 with a 3.39 ERA. Florida will counter with Anibal Sanchez, who is making his first start at Coors Field. ESPN Radio 1410 has all the action from Denver tonight. Pregame coverage starts at 7:05 with the first pitch at 7:40.