Gannon is the ONLY loss Kimbo has in his street fights. And Mercer is 46 years old.
Yes, so its said. Like I said though, while no one has proved he has lost more, its just what I've heard. Either way being beaten by a UFC spare tire like Gannon isn't impressive. Not to mention Gannon is the only opponent of Kimbo's worth mentioning. Also if you watch his vids, his crew steps in constantly, usually when Kimbo is in trouble or is about to be.

You can use the argument that Kimbo was untrained in MMA then. Well, he's 4 weeks under Bas Rutten, and Ray Mercer claims to have been training MMA for over 9 weeks. I'd put my money on the ex-world champ boxer who's crosstrained over an underground boxer who's crosstrained.

And ya, 46 not 43. I was going a little fast on the Numpad and didn't feel like editing my post. :P