He gets thrown by Williams, then gets up and tries to retaliate in kind, but just ends up getting thrown on his back again, and trust me it would happen 100 times in a row. The point is the modern rules dont allow for any standing greco grappling and dirty boxing, while the old rules did. When youve been practicing a skill for 20yrs it more than makes up for 20lbs, you know?
No, in fact, when Dempsey nailed him, he just stood there and took it, without any form of defence, let alone clinching.