Nolan Arenado came through with another big swing for the Colorado Rockies. Arenado hit a two-run triple off Zack Greinke in the eighth inning, and the streaking Rockies rallied past the Arizona Diamondbacks 4-3 on Tuesday night in the opening game of their NL West showdown. read more http://www.espn.com/mlb/recap?gameId=370620127