He was starting to show legit stuff in the rotation before he went down (his last 4 games he had xFIP of 3.73, 3.22, 4.34, and 3.58). His only real issue has been the walks. If he can get those under control, he could be very good, very quickly. It's nice to see that he could fall back on being a very high end reliever if he fails in the rotation though.