Photo: Kimbo Slice / Instagram Kimbo Slice, known for his legendary backyard brawls, showed he could hang with the best in professional fighting. He shocked the combat sports world by defeating Olympic gold medal-winning boxer and former heavyweight champion Ray Mercer in an MMA fight. Slice, whose real name was Kevin Ferguson, gained fame in the early 2000s through viral videos of his street fights. With a growing fan base, he decided to take his talents to the MMA world, training for two years before facing Mercer. At 46, Mercer had an impressive boxing career, having fought legends like Lennox Lewis and Evander Holyfield . But by the time he stepped into the cage with Slice, he was past his prime. Photo: Kimbo Slice / Instagram When the fight began, Slice wasted no time, rushing across the cage to take Mercer down. Mercer managed to get back on his feet, but Slice’s aggression was too much. After landing knees and another takedown, Slice locked in a guillotine choke, forcing Mercer...