Pick one fight between 2000 and present where you have seen the highest skill level combined from both guys in a competitive fight. I pick GGG Canelo 2. Both guys were defensively and amazingly amazing. They both blocked, slipped and rolled punches beautifully while setting up powerful left hooks, right and left uppercuts, straight right hands, body shots, combinations, etc. Its hard to think of a modern fight with such immense skill level from both guys.
Roman Gonzalez vs Estrada 2 or really any fight in the series but I think 2 was the best and had the best display of skill
I was going to say Ward vs Kovalev 1 has to be high on the list. Very technical fight between Kovalev's long range sets ups and accurate power punching and Ward's skillful infighting. Great fight.