DENVER (AP) – Jon Gray tossed six strong innings in another solid outing for Colorado starters, and the Rockies beat the Pittsburgh Pirates 6-2. Garrett Hampson had four hits for the Rockies, who swept the three-game series and improved to 28-16 at home. Colorado is just 6-31 on the road.A day after being no-hit by German Marquez for eight innings the Pirates jumped on Gray for their first runs of the series. Adam Frazier led off the game with a triple, scored on a sacrifice fly and Bryan Reynolds homered for a quick 2-0 lead.It was Reynolds’ 14th of the year.Gray (5-6) didn’t give up another hit before leaving four a pinch hitter in the sixth. He walked four — one intentional — hit a batter and struck out five to continue the strong run of outings by Colorado starters.