You sure, was on a train coming back from Leeds once, and Warrington RL fans made a right mess of one Leeds fan because he came from Wigan, I was only about 15 at the time and these were men.
Warrington and Hull fans are most likely. Especially if they have lost.
Very rare to see problems between fans. Only ever seen small scuffles. Vast majority just want to have a beer and watch sport.

