Z is a good ace the same way Harang is a good ace. In that he is better than everybody else on a very bad pitching staff. Look at Zambrano's ERA the last couple of years. Nowhere CLOSE to stellar. And his huge BB rate is a concern for a guy you are prepared to pay $90 million dollars to for 5 years. I think it's best he IS traded for something really good or a bundle of highly touted major league ready prospects. This is where not going all out on Matsuzaka is looking bad. We now have Lilly and Marquis, neither of them are above a "#3 calibur guy". If we had Matsuzaka, and traded Z for someone like A-rod. Well atleast you have Hill and Matsuzaka to cement the top of the rotation. Now, you only have Hill.