Liston did not defeat Marshall in his 7th pro fight. It was actually his 8th pro fight and he lost. Unfortunately spriteisgood is to stupid to correct you.
Great boxer but we need more film from when he was younger. I think his power is a bit over rated but he was a great puncher. But at 75 percent of his wins by ko, there were many who had better percentages. but also, I believe George Foreman.