An overwhelming majority of the most memorable and brutal knockouts in boxing history are head shots, but there are certain body shot KOs that would make you wish you were unconscious instead of rolling around in agony on the canvas.
April 25th, 1998 at Coast Coliseum in Biloxi, Mississippi. Roy Jones Jr had just come off avenging his DQ loss to Montell Griffin by wrecking him inside of one round. Virgil Hill had been defeated by Dariusz Michalczewski and thus lost his WBA and IBF light heavyweight titles.
Jones was the WBC champion at the time of this bout, but there was no title at stake that evening, because the WBC declared him as “champion in recess,” presumably for several months of inactivity.