Kovalev whose best wins are Cleverly and 50 yr old Hopkins like really? Vs Holyfield this doesn't even warrant an answer if your this delusional to ask.... Kovalev looks like he could be the real deal but he has a lot to prove before he even gets close to fantasy matchup status.
Just looked it up, Holyfield made his pro debut as a lightheavyweight, fought a total of 4 fights in a span of 5 months at the weight.
If you pulled Holyfield out of a nightclub in Atlanta tomorrow and trained him for a fight on Sat. He stops Bernard.
A 230lb untrained Holyfield. Hopkins schools him like toney did. I doubt even a 2007-2012 version of Holyfield could stop hopkins. He wouldn't catch him.