I was wondering what sports leagues keep track of a championship winning roster? I know the NHL does it (with the stanley cup) and the other leagues that put names on the trophies do it but what about the leagues that give out trophies yearly how do they keep track of the rosters? I googled these things and no answers so please help.

I think that you have to find the winner of that year, then google that team and year and see what you come up with.
God bless!!