I am not sure if Hearns would knock him out in round one, but if not that then round 2. Tommy's right hand would be landing easily against Pacman. Tommy is better than the Cotto or Hatton caliber. I love both those guys, but Tommy is just better all around in everything. Tommy is a legit legend with a quick straight right. I would say round one knockout after 2 knockdowns.
Can we stop making these threads? Hearns had the frame to fight all the way up to light heavy. It wouldn't even be fair.