At one point in the season, this looked like it might be a series between two Wild Card contenders. Now, the Rockies are in last place in the division, and Arizona is 4.5 games back in the Wild Card and losing time.
Game 1: Chi Chi Gonzales(0-4, 6.57 ERA, 1.78 WHIP) vs. Zac Gallen (2-3, 2.58 ERA, 1.25 WHIP)
Gonzalez is minor league filler for the Rockies, and not doing a great job about it either. ERA is always a bit misleading at Coors, but his 83 ERA+ backs up that 6.