Jose Quintana just isn't very good. He is 0-4 with a 6.75 ERA in his past six starts and the Cubs are carrying a high bullpen fatigue rating after Cole Hamels could pitch just one inning on Friday.

Luis Castillo is a good young pitcher. But right now he is struggling with a 4.02 ERA in his last three starts. Castillo has a 4.31 day time ERA and is having problems with his control. Castillo has given up 11 walks in his last two starts. The Cubs are the best at drawing walks.

Great American Ball Park is a great hitter's park. Weather conditions are ripe for the offense, too, with temperatures in the 90s and wind blowing out at 8-10 mph.