on skysports "when it comes to his defence,his range and his timing,he is a nightmare.I know it was few years ago as i was getting ready to fight andre dirrell,but i sparred with kell and i did not enjoy it in the slightest. Kell was awkard,he was impossible to hit and although it was only two or three rounds,i do remember thinking "this kid is going to go all the way and become world champion"
Well if he sparred against King Froch I see no other result than Brook knocking out GGG in devastating fashion....