Video of the Day - Mercer KO's Sylvia

Here is Ray Mercer ending former UFC Champ Tim Sylvia's night at Adreneline 3. Rich Clementi and Jeremy Horn also notched victories on the card. Mercer's KO was the first major upset by a former boxing champ in MMA.

Video of the Day - Kimbo v. Mercer

Here is Kimbo Slice v. Ray Mercer in an exhibition bout contested under MMA rules at CFFC 5 which took place on 6/23/07 in Atlantic City, New Jersey. It is believed that because the match was classified as an exhibition, it isn't officially in many record books.

Kimbo will next fight Dada 5000 at Bellator 149 which takes place on 2/19/16.