I remember drafting Vazquez in the 3rd round in 2002 and being happy as a pig in mud. He went on to have a not so great year and I don't think I ever had him on any of my teams again.
Unfortunately for his career, he went to New York and got the Jeff Weaver disease. Imagine what could have been.
Like some of you guys said, I also think it's pretty hard to predict what he's going to do. Not as bad as the All or Nothing we get with Daniel Cabrera though. Vazquez is 30 years of age, so I don't think we can expect a great improvement from him, but as a 4th starter or maybe even a 3rd, he's having a great year.