Beautifully put. My memory of it is that Ali fought those first few rounds like a guy who thought he didn't need to conserve his energy because he'd have Frazier out of there quickly. By the 5th, it was clear Frazier wasn't going anywhere and Ali had already spent a lot of what he had and Joe took over and battered him on the ropes. Ali knew he was taking too much of a beating so eventually had to try and box his way out of trouble. I love fights with shifts in momentum - they add to the drama - and Ali-Frazier 3 is one of the great examples of that in heavyweight history.