UFCThe Ultimate Fighting Championship (UFC) is a U.S.-based mixed martial arts organization, recognized as the largest MMA promotion in the world. The UFC is headquartered in Las Vegas, Nevada and is owned and operated by Zuffa, LLC. This promotion is responsible for solidifying the sport's postion in the history-books.
UFC is currently undergoing a remarkable surge in popularity, along with greater mainstream media coverage. UFC programming can now be seen on FOX, FX, and FUEL TV in the United States, as well as in 35 other countries worldwide.
Like others have said the number of viewers that would watch this fight would be epic because of the following.
However the fight it's self would pretty much be a joke and could do alot of damage to Kimbo's popularity and would be career suicide for him and maybe just plain suicide as well. Lesnar would destroy him. As Raw as Lesnar is he would looked like a seasoned vet out their vs Kimbo. I mean Lesnar could choose to either stand up with Kimbo and Knock his big head off or he could just pick him up, slam him down, and beat his face in.
The fight would not go past round 1 and Kimbo's face would look like raw hamburg.