certainly, actually, his hands had already begun to slow by the time he won the title, you can see his peak handspeed in the Sugar Ray Seales, i think the rubbermatch, fast fucking hands. Yet and still, he managed to improve as a champion, fighting and winning with skill that most people overlooked, fighting differently each time because he felt his opponents needed to be fought diffferently. Whether it was age or a sated ego, he'd just won all the stardom he wanted after Hearns and fighters usually let off when that happens, the Hagler who fought Mugabi won with an all time great chin, determination and brawn, not skill. Ray saw that and he jumped on the opportunity.