He was 6-4 with a 3.89 ERA post all star break last year. How in the world is that "really bad"? He was coming off a broken freaking elbow, and came back as good as any reasonable person could expect. That's not really bad. It's about No.3/4 starter quality. He's probably just frustrated that in addition to that, Prior had a 4.02 ERA the year before. That's cause for concern for a guy who was once one of the better pitchers in the league. Number of NL starters with an ERA below 3.89 last year: 24 That must be quite the pitching staff for it to be 3/4 starter quality. Any contending team who has a No.2 starter with an ERA around 4 has problems. First of all, using ERA as a black and white determinant is pretty crazy. FWIW, Prior's ERA all of last year was 3.67 Secondly, there are 16 teams in the NL, and Prior's marks(no pun intended) put him 19th ERA. He was 14th in WHIP, 12th in K/BB, 1st(by quite a bit) in K/9, 11th in Quality Start %, 5th in BAA, 9th in OBP against, and 12th in OPS against. If anything, he was a borderline number 1 starter last year.