With their backs against the wall in Thursday’s series finale against St. Louis, Colorado let loose with the lumber. The Rockies scored five runs with two outs in the eighth inning, propelling them to a 10-8 comeback victory at Coors Field. The retiring Charlie Blackmon was central in the rally, with a two-run homer, three runs scored and three RBIs. “Only four outs left, but you watch enough games to think anything can happen, and this was an instance today where it did,” Rockies manager Bud Black said.