Mike Tyson waits in his corner during a 1991 fight against Razor Ruddock. Tyson would go onto win by unanimous decision. (Richard Mackson/SI)

GALLERY: Rare Photos of Mike Tyson

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• 1991

A close-up of Evander Holyfield’s ear, which was famously bit into by Mike Tyson during their 1997 fight in Las Vegas. Holyfield is celebrating his 50th birthday on Friday. (Manny Millan/SI)

GALLERY: Classic Photos of Evander Holyfield

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It’s Tweet Week at SI.com and this hilarious message Mike Tyson sent to his 2.7 million followers is the most memorable Tweet of 2012. Check out the rest below. (AP)

GALLERY: Ten Most Memorable Tweets of 2012 | Top 15 Sports WAGs on Twitter 

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Fifteen years ago today, Mike Tyson famously famously took a chunk of Evander Holyfield’s ear during their fight in Las Vegas. Holyfield was awarded the winner after Tyson was disqualified for the biting incident. (V.J. Lovero/SI)

GALLERY: Biting in Sports | Rare Photos of Mike Tyson
SI VAULT: Tyson drags his sport to new depths (7.7.97)

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Mike Tyson watches as referee Mills Lane counts out Trevor Berbick during their 1986 fight in Las Vegas. Tyson won the fight to become the youngest world heavyweight champion in boxing history (20 years, four months). (John Iacono/SI)

SI VAULT: Tyson KO’s Berbick to become youngest champ ever (12.1.86)
PHOTO GALLERY: Rare photos of Mike Tyson

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• 1986

An aerial view of Mike Tyson biting the ear of Evander Holyfield during their famous 1997 fight in Las Vegas. (John Iacono/SI)

SI VAULT: Tyson drags sport to new depths with bite of Holyfiend (7.7.97)
GALLERY: Rare Photos of Mike Tyson | Biting In Sports

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