If it's the same one I saw, the big guy is going to get his ass handed to him. The one I saw showed he had absolutely no clue about boxing. Horrible footwork with walking toward his sparring partner crossing over his feet instead of leaving his right foot forward and gliding across the ring------yeah, he was sparring southpaw.
His punches were nothing short of all arm with absolutely no using the balls of his feet to generate power to his hips and shoulders to turn over his punches with any real force.
Also his chin was totally exposed but at his height, it may be somewhat safe until someone gets inside his guard-------which was non-existent.