What a mismatch, Kovalev ruined Hopkins 2 years ago, however B-Hop at 49 would have still won every round against Smith if he fought him then. Smith gets destroyed by Kov inside 4 rounds.
THAT should of been the red flag for Bhops that he didn't belong in a world class stage anymore. He was seriously hurt there. You could tell Kov still had alot of respect for Bhops and at times seemed to be carrying him.
This isn't a question of power. This is a question of boxing skills, and Kovalev is twice the boxer Smith is. Sergey puts on a masterclass and stops him late, most likely.