His success as a starter has been almost entirely predicated on an untenable 0.55 HR/9 rate. That rate would have put him 10th amongst qualified starters last year, behind only Josh Johnson, Billingsley, Ubaldo, Liriano, CJ Wilson, Anibal Sanchez, Clay Buchholz, Jaime Garcia, and Mike Pelfrey. The astute amongst you will have already noticed that a lot of the names on that list aren't expected to repeat their performance... and each of them (including Pelfrey) is significantly more talented than Coleman. In short, Coleman is going to give up home runs... and when he does, it's going to get ugly in a hurry. It's best he stay in the rotation no longer than absolutely necessary and the Cubs should be looking for replacement options even during that time.