I don't know who you consider great @El Kabong
But what was Ali, Leonard, Robinson and Jones doing at 41?
Floyd is still unbeaten and was still fighting at the highest level
Well into his late 30s whereas most guys had long since retired.

Leonard, Ali, Tyson, Jones were all getting beat up in their late 30s
You obviously want to see Floyd get beaten but it'll never happen
50-0 with hundreds of millions in the bank. He doesn't need Crawford.