When Hearns was fighting, it was same day weigh ins, so he came in near to 147 lbs anyway and he wouldn’t have been cutting much weight, so could he even make 140lbs today with before fight day weigh ins?
You can if you mean what was his best division that he actually fought at, if so I would say his best weight that he actually fought at was 147 and 154
I think he'd start at 135 or 140, and stay at 147 for a good while. I read that Crawford was 152 in the ring at LW. Weight classes have just shifted so much.
154 was his best. If he could have fought the rest of his career at this weight? It would have been an exciting time.