Just an FYI stat...it's been nearly seven years since the Cubs have won over five straight games at home. Their offense also hasn't really been tearing the cover off the ball...they beat the Dodgers with some very low scorelines before the first Rockies game yesterday, and they run into another good pitcher today.
Cook pitched well against the Cubs earlier this year...think his ERA was only 2.25 in that game, and his overall ERA is around 2.80. Think there's a little value in the Rockies, but as has been mentioned above...their bats worry me.