The British boxing hero raced Dubai-based personal trainer Jevaise Christie over 40 metres, and even had time to flash his opponent a quick Usain Bolt glance before crossing the finish line.
Last week, Watford supporter Joshua was spotted playing in a football game that featured Barcelona great Eric Abidal, and Juventus’ stars Paulo Dybala and Miralem Pjanic.
27-year-old Joshua will face Wladimir Klitschko in April for what will be one of the biggest fights in recent history.