Kimbo takes on former heavyweight champion of the world, Ray Mercer, in his first mma bout. Kimbo comes into the fight in excellent shape while Ray Mercer looks very old and heavy. Kimbo shows off his newly learned mma skills with clinches, knees, elbows and a guillotine. Ray obviously didn't train that hard and only throws a few punches. Kimbo proved his skills with a victory via guillotine.