This one seems pretty easy. Here we have a good Colorado starter in Jeff Francis (7-4 at home with a 4.02 ERA) vs. a bad starter in Kyle Davies (2-4 on the road with 6.02 ERA). And, we have a pretty big offensive advantage for Colorado. The Rockies score 5.5 per game at home. While Atlanta gets close to that on the road, they score just 4.3 per game vs. lefties like Francis. Colorado is 25-10 this season at home after having lost 2 of their last 3 games. Rockies and Francis here.