Hearns chin was alright. One of his problems was weight. By the time he fought Leonard to unify the welterweight crown he really couldn't make 147 anymore. In his bouts with Rodan and Barkley he really shouldn't have been at 160 anymore. They both came after he won the 175 lb. title by beating Andries. The Hagler bout well, blame that on a poor game plan or even not following the right game plan. I'm not saying Hearns was George Chuvalo or nothing, just that for an agressive puncher he did alright.