Corey Dickerson's second triple of the game drove in the winning run in the bottom of the 15th inning as the Colorado Rockies dealt the St. Louis Cardinals a 7-6 loss at Coors Field. With the loss the Cardinals' lead atop the NL Central is down to one game over Pittsburgh. Todd Helton hit a game-tying solo homer off Cards closer Edward Mujica in the bottom of the ninth. Matt Holliday went 3-for-4 with two RBI for St. Louis. Fernando Salas took the loss. The Cards and Brewers start a three-game series tonight.