The Rockies are the ugly Mr. Hyde on the road, but at Coors Field, they’re Edward Hyde, M.D. The San Diego Padres discovered that the hard way. The Rockies beat the Padres, 8-7, on Wednesday afternoon on Charlie Blackmon’s pinch-hit, no-out, walk-off single to center off Austin Adams. Blackmon’s sixth walk-off RBI of his career drove in Trevor Story, who led off the inning by drawing a walk and then stole his second base of the game. “I don’t want to say it’s expected from Chuck, but I’ve seen him come through so many times for us,” said Story, who hit two doubles and is beginning to emerge from his slump.