Daniel Dubois is regarded as the next big thing in the buoyant British heavyweight boxing scene.
The 19-year-old has turned his back on a shot at the Tokyo Olympics to go professional and has cruised through his first four fights with consecutive knockout wins.
But it's in the sparring ring where he has also made his mark, knocking down Joshua while helping his fellow Brit prepare for his recent win over veteran Wladimir Klitschko to add the WBA belt to his IBF title.
