From a Mental Floss blurb about Kid McCoy:
"But McCoy's lowest blow? In 1893, when he fought a deaf mute. Toward the end of the fourth round, McCoy simply dropped his gloves and walked back to his corner as though the bell had sounded when the deaf fighter turned to do the same, McCoy ran over and knocked him out."
You have a chance to go down in MMA history, make it happen!