MIAMI — The Miami Marlins needed a late rally if they wanted to start their homestand with a series sweep against the Colorado Rockies. They got it in the eighth inning. A three-batter stretch with one out in the frame gave the Marlins the go-ahead run in their 3-2 win over the Rockies on Thursday at loanDepot park. Miami won the first two games of the series 9-8 on Tuesday and 7-4 on Wednesday and is now 32-36 on the season. The Rockies fell to 30-40. Garrett Cooper started the eighth-inning rally with a one-out single through the left side. He was replaced by pinch-runner Luke Williams, who …