It was Slice 's first MMA fight and he submitted former boxer Ray Mercer .
The first show was on June 23 , 2007 , a CFFC ( Cage Fury Fighting Championship ) show involving Kimbo Slice in Atlantic City .
It was Kimbo Slice 's first MMA fight and Kimbo Slice submitted former boxer Ray Mercer .
The first show was on June 23 , 2007 , a CFFC ( Cage Fury Fighting Championship ) show involving Kimbo Slice in Atlantic City .