After realising the "sweet science" of boxing, Anthony Joshua says he is both lighter and more powerful before facing Andy Ruiz Jr.
Rob McCracken and Manny Robles are charged with providing the game plans as Andy Ruiz Jr and Anthony Joshua clash for a second time.
A focused Anthony Joshua will keep the celebrations to a minimum if he can beat Andy Ruiz Jr to become heavyweight champion once again.
Anthony Joshua was not 100 per cent when he faced Andy Ruiz Jr the first time around, in the view of former world champion David Haye.
Anthony Joshua and Andy Ruiz Jr will meet again this weekend, the latest notable rematch in the storied heavyweight division.
Andy Ruiz Jr's rematch with Anthony Joshua takes top billing in Saudi Arabia, but Dillian Whyte's return to the ring will attract interest.
It was a punch that sent shock waves throughout boxing and Anthony Joshua had suggested Andy Ruiz Jr had divine intervention in his favour.
Shelly Finkel says the rematch between Deontay Wilder and Tyson Fury will take place in February, with a location to be confirmed soon.
Anthony Joshua is promising a fight "people will tell their grandchildren about" when he goes up against Andy Ruiz Jr on December 7.
Deontay Wilder (42-0-1) stunned his opponent with a powerful right hand at MGM Grand in Las Vegas on Saturday.