Boxing champion defeated

The tense atmosphere here made everyone else sweat.
They had never seen a duel like this before. Even in underground boxing rings, where the rules were relatively less complicated than in formal competitions, there would be more nonsensical matches and more unexpected content, they had never seen anything as wild as today.
Where are you still boxing?
No, it should be said that compared to this, can other competitions be called boxing?
This is real boxing. The fists of both sides hit...