My thinking is that Hearns was too good and his chin was not that suspect but Norris chin was. Hearns chin was not dependable in long fights, but usually it held up since he fought alot of legends. Remember he took Hagler's best in that round one. I doubt Terry could have taken Hagler's best since Terry was rocked with a Simon Brown left jab. My guess is that the chin of Terry falls apart and Tommy gets a 2nd or 3rd round knockout.