Hearn called Joshua's win over Ngannou the best knockout since the advent of boxing

"Some people say it's the knockout of the year. I say knockout of the year since the birth of boxing. I envisioned AJ knocking him out, but in the later rounds. It was a great performance," Hearn told iFL TV.

Recall, Joshua finished MMA fighter Ngannou yesterday in the second round of their confrontation, which took place on March 8 in Riyadh. In the first round, Francis was knocked down.