On June 29th, 1997, The New York Daily News wrote, “Biting off more than he could chew, Mike Tyson was disqualified for twice sinking his teeth into Evander Holyfield in the third round of last night’s rematch between the two biggest money-making fighters in history.”
Tyson chewed off a piece of one ear and reportedly also tried to bite Holyfield’s other ear. Tyson was disqualified from the boxing match that night. Holyfield was sent to the hospital.
http://www.thepostgame.com/blog/throwback/201506/throwback-mike-tyson-bites-evander-holyfields-ear