winner picks the next opponent, they are showing how hard working and dedicated they are by rushing in and trying to get picked

It's King of the Hill. Winner stays in and picks his next opponent. Everyone crowds him in a, "Pick me! Pick me!" sort of way.

What’s the reason other wrestlers all crowd the “victor” during tour practice? The winner of the match will be crowded by other wrestlers on the dohyo and they say stuff to him and kind of hold him at bay. Some are smiling. What’s this tradition?

Sumo tour question