Cross country sprint heat selection gives me some serious StarCraft nostalgia. In big leagues they usually got players to select their own groups (basically you had one seeded player per group, they each picked one player to be in their group, then these players picked one player, and so on until all groups were full). They always made a big show of it with trashtalking and whatnot. Some leagues had elaborate entrances for the players too.
Kind of wild seeing a "real" sport come up with a similar group selection format.