the only problem is that Sergei Kharitonov was an amateur boxer. He has more than a little boxing experience. Unlike james toney or ray mercer in mma.
Sergei started his Amateur Boxing Career in 2000. He tried to get into the Russian Olympic Boxing team but got injured in the semi finals during a live boxing TV event. Instead he competed for Tajikistan in 2003 at the Central Asian Games where he won a silver medal. Kharitonov earned a shot at that year’s Olympics, representing former Tajikistan (the former Soviet republics often have ethnic Russians on their teams) but passed on the chance to instead fight in the Pride 2004 Heavyweight Grand Prix.
He nearly qualified for the Athens Games by winning the silver medal at the 2004 Asian Amateur Boxing Championships in Puerto Princesa, Philippines. In the final he was defeated by Uzbekistan's Rustam Saidov. In the fall of 2004 he competed in the Russian Boxing Championship and placed second. Sergei could not fight in the final match due to an injury.
....so his boxing ability is quite relevant.