Anthony Joshua has been warned that he cannot repeat his performance against Jermaine Franklin when he takes on Francis Ngannou this week. Johnny Nelson admits he is ‘worried’ for the Brit and says he could get knocked out by Ngannou if he is not on top of his game on Friday. Joshua will enter the ring for the fourth time since last April when he takes on the former MMA star in Riyadh, Saudi Arabia. The former two-time heavyweight champion is the big favourite heading into the fight against an opponent who only has one professional boxing match to his name. Nelson, who remains the longest reig…
