While waiting for his turn to hit, Paul Goldschmidt often can be found at the top rail of the dugout next to Arizona manager Kirk Gibson. The big first baseman watches the opposing pitcher, trying to pick up pitches, tendencies. That bit of extra knowledge tends to pay off nicely for the young slugger, particularly the past few weeks. Goldschmidt homered and drove in three runs while extending his hitting streak to 14 games, Wade Miley pitched eight sharp innings and the Diamondbacks rolled to a 6-1 win over the Colorado Rockies on Wednesday night.