Here is an odd MMA v. Boxing exhibitionn fight pitting Japanese MMA superstar Masakatsu Funaki against former boxing champ Roberto Duran. The rules included an 8 second ground period and limited clinching. There are rumors as to the authenticity of the match.
Funaki(39-13) is a founding member of Pancrase and MMA legend with career wins over Guy Mezger, Frank Shamrock, Bas Rutten and kickboxing legend Semmy Schilt.
Duran(103-16) is a boxing legend, most famous for his trilogy of bouts with Sugar Ray Leonard.