Even though Hearns was by far the better fighter p4p I think Bivol was too fast and elusive for the 1991 version of Tommy. I think it goes the distance with Bivol getting a decision. It might be closer than some think though. Hearns looked good against Hill who in my mind was a very good light heavy
I think Bivol beats him Hearns was past his best at that point and Bivol hits hard enough to trouble Hearns plus being too skilled for Hearns to outbox. Wins either a late decision or late knockout.
Bivol is not too skilled for Hearns to outbox. Bivol would be forced to press the issue like he did against Lyndon Arthur. Long jabbers like Zinad gave Bivol problems
Rewatch the fight. Bivol did not dominate Zinad at all, he was getting outjabbed for a portion of the fight and eventually got to Zinad but Zinad is no Hearns. He beat Arthur comfortably but had to press the action the entire fight. Bivol isn't comfortable fighting tall guys at range
It was a short notice fight where he was fighting more aggressive then usual but considering he didn't lost a single round doesn't really say much. Plus like I said he dominated Umar, Barrera, Ramírez all tall guys with good jabs and he outjabbed and beat them all at range.