But he isn't a Yankee killer.
I like Zito because he takes the bump every 5th day and gives you a reasonable chance to win. That said, he's been hit or miss in big games and he can have some control problems. I'd take him, but he's going to cost a lot.
One of the things to consider about Fenway is the foul territory. The Oakland Coliseum has the largest amount of foul territory in baseball, Fenway the smallest. He'll lose some of his cheap outs, and he's entering a league with some premier RHB. The Jays kill LHP with Wells, Glaus, and Molina having huge splits against them. The Yankees have become more LH this year, but they still have premiere RHB's. The heart of the O's order is RH. The D-Rays sluggers are RH. Fenway has become a pitcher friendly park for the HR, but I think that has more to do with the 2nd deck (and adjacent building behind the pressbox) taking away helping wind to CF and RF. A cheap pop still gets out of LF.
I'm skeptical that he will be worth what he will get if he comes here.
I think they should get Schmidt for a couple of reasons. He's older, so they'll likely be able to go with a smaller commitment. He's a power RHP. And, ulitimately, I think he's a better pitcher.