A chance for another series win and a winning road trip slipped away from the Colorado Rockies in a 9-6 loss to the San Francisco Giants yesterday afternoon. The Rockies’ four-man rotation experiment has exacerbated the stress on their bullpen, and that was in evidence in what would be a fatal eighth inning. With six outs to go and a 6-4 lead, the normally reliable but overworked Matt Belisle allowed a run to score and departed with the bases loaded and one out. Closer Rafael Betancourt came in and promptly gave up a game-tying sac fly and a game-losing three-run home run to the Giants’ Hunter Pence. Eric Young Jr. had three hits and drove in a run to lead the Rockies offensive attack in the defeat. The Rockies return home tonight to open a three-game series against the Milwaukee Brewers. ESPN Radio 1410 has the action, with the pregame show at 7:05 and first pitch at 7:40.