Warning: You might want to hit the mute button before watching this one (LOUD) unless you enjoy the sound of your own ears bleeding or feel the need to scare the shit out of your co-workers.

Hard-hitting heavyweight slugger Sergei Kharitonov, who injured his neck and was forced to withdraw from his mixed martial arts (MMA) fight against Tony Lopez at the "2012 Glory World Series" last month in Sweden, didn't appear to be suffering any ill effects when he climbed back into the cage last Saturday night (June 1, 2012) in Russia.

That's where Kharitonov submitted John Delgado (keylock) in the main event of Russian MMA Championship (RMMAC) from the Yubileyny Sports Palace in Saint Petersburg. It was the second straight win for the former paratrooper, who was bounced from the Strikeforce Heavyweight Grand Prix with a submission loss to Josh Barnett back in 2011.

How long before we see this guy mixing it up inside the Octagon?