Don't you have to question their "balance" in the first place? ; )

Q: If a Cubs fan living in Chicago pulls against the White Sox, does it indicate he or she might be mentally unbalanced?

A: "If the teams are not directly competing against each other, the idea of a Cubs fan rooting against the White Sox becomes a little pathological," says Dr. Robert Burton, an assistant professor of psychiatry at Northwestern University. "Technically, it probably stems from some unresolved sibling rivalry kind of thing. Otherwise, you have to wonder what a Cubs fan has to gain by pulling against the White Sox. Not too much, really, unless it's to feel better about himself. If the White Sox lose, then they're both in the doghouse.

"A resolved sibling rivalry would let you enjoy the success of your neighbor, or whomever, and root against each other only when you're going head-to-head. Any kind of sibling rivalry is commonly referred to as arrested development. Then, you get history and other issues layered on top of everything, and it can compound things. I personally pay more attention to whichever team is succeeding."
-- Mike Conklin