I'm curious how some sports like tennis, where players compete as individuals rather than nations, handle the bans.
There's a big tournament in Indian Wells next week. The full draw isn't out yet but the seeds are. The men's draw has 4 Russian players. The Women's has 2 Russian and 2 Belarusian, but also 1 Ukrainian. Could well be contentious if the Ukrainian player is drawn to play any of the Russians or Belarusians.
With the football ban, unsurprisingly Russia are whinging about the ban being unfair and are going to challenge it, as expected. But given such bans have been applied to South Africa and Yugoslavia in the past I can't see them overturning it. And they can go whistle as far as I'm concerned.