uh huh, the one with the oval leather ball and
yes, football
Well.
Actually, I'm reminded of
this story by
@Gryphon from 2015, which features
a chapter that details exactly how much the planet the main characters are visiting is in the pocket of a few capitalists/warlords - including, at the very end, the fact that they own baseball teams that are just straight-up named for them. The piece turned out less useful than I was expecting for this - that last part had stuck in my mind for some reason, but it's basically how Japanese baseball works, so it's not even
that weird.
In any case, I'm an absolutely crap sports writer, but I can provide my usual service of wildly speculating back and forth with no real focus.
A question we need to answer is how exactly the tournament is constructed. Do we have clubs owned by the economic players or some sort of "national" teams representing individual asteroids? Undoubtedly it'd make more sense logistically to have local teams, but OTOH, I don't really see an amateur cup gaining much ground in the economic climate of the Belt - maybe as an internal OPA thing.
There's also the question of gravity, which isn't that much of an issue when dealing with Earth/Mars competitions as it is when gravity is a yes/no dichotomy. I don't even know how football would work in zero-g (handball or basketball OTOH might work better), let alone how to settle the difference when a team from Ceres with its 1/6g meets a team that's literally never trained down a well before.