"Ah." Japanese means nothing to him, nor football players, but he can follow the rest. Some kind of martial exertion, the sort of thing people involved take very seriously and that people like Percy mostly know by reputation.

It's not clear where the ceremony of it comes in - fighters of all sorts have their moments of posturing - but he's not terribly interested in the details at the moment. Before them, one of the men is slammed to the ground, but he's up a moment later, looking worse for wear but still holding on. "Care to lay a wager on this one?"