Former world champion Barry McGuigan is beyond impressed by the recent performance from Anthony Joshua.
Joshua retained his WBO, WBA and IBF titles after he beat Andy Ruiz in his rematch in Saudi Arabia.
Ruiz beat Joshua in June but the British boxer fought all 12 rounds of their rematch to win the fight on points.
"I think this could not have been better," McGuigan told talkSPORT. "Hindsight is a great thing and we can see all of the things that we maybe speculated about.
"But the bottom line is; the performance he put on, the versatility – we have never seen this before. We saw him do a little bit of boxing in the [Joseph] Parker fight, but never move like that.
"He was like Muhammad Ali moving around like that, moving around the ring like that. His hands weren't as low, but he was disciplined, he was tactically on point from start to finish.
"He boxed impeccably, magnificently, and he showed us another element to him. He has moved on and advanced as a fighter, as a human being, Anthony Joshua."