"He's going to be in for a bit of a shock when he has to come back and fight in the O2...both fighters are going to learn a lot...big risk, great reward...this may be a good experience; this may be a bad experience...Charles Martin actually reminds me of AJ...Anthony has to go in the ring with fear," stated former world champion and Sky Sports commentator Johnny Nelson, who shared his thoughts on the intriguing showdown between Anthony Joshua and heavyweight champion Charles Martin. Check it out!