As a 20+ year fan of the baseball team GB once owned, I have to say that I would hesitate to use the word "fabulous" with them.....unique, yes, but not fabulous. The only team who consistently crashes after the All Star Break. You can almost set an atomic clock by them.
I can't be accused of being a fair weather fan, but I could be accused of baseball fan masochism.
On the US baseball theme, though, it could be argued that Barry Bonds is the most hated person.