Tonight was the first time I watched him. I thought he was extremely unimpressive through the first three innings. Everything was hit hard and he missed whenever he threw a breaking ball it appeared. However, starting in the fourth he kept the ball down, made some key pitches, and blew it by one of the best power hitters in baseball (Adam Dunn).
He has a lot of fixing up to do for sure.
edit: I had Pelfrey going 7 IPs 2 ERs today. Too bad I didn't post it to prove it