Originally Posted by MikeThierry
I agree with this. I laugh at Cardinals fans who think the Cards/Cubs are the biggest rivalry in baseball. Part of what makes a rivalry is that both teams have to be good.
Only a part, though. Bengals and Browns fans will say the Steelers are their biggest rival but the Steelers have dominated both teams over the past 40 years. I think familiarity plays a larger part in it than whether the teams are good.