Arizona Diamondbacks at Colorado Rockies, 6:40 PM. MT
The Rockies (58-94) and Diamondbacks (77-75) conclude a four game series , Arizona has taken the first three games of the series while averaging 11 runs scored. Colorado has lost 9 straight games and needs to win at least 5 games out of their last ten to avoid the first 100 loss season in franchise history.
Tyler Chatwood (4-5) starts for Colorado and has struggled in the seasons final month, going 0-2 with an ERA of 8.04 in September. Trevor Cahill (12-11) starts for the D-Backs and is making his third start against Colorado in 2012 going 1-1 with a 4.26 ERA over those three starts.