Michael Spinks turned professional with a win over Eddie Benson, knocked out in one round on April 17, 1977 in Las Vegas. With that, Spinks began a 31 fight winning streak that would almost extend to the end of his career. After four more wins, Spinks finished '77 with the first fight that began a gradual ascent in opposition quality: an eight-round decision over Gary Summerhays, a popular young boxer of the time. In 1978, Spinks won two fights, including an eight-round decision over former world Middleweight title challenger Tom Bethea, in the same undercard where his brother Leon dethroned Ali as
Michael Spinks vs. Dwight Muhammad Qawi to six were, on the eyes of many, including the judges, dominated by Spinks . By the middle rounds, however, Qawi began to untrack, and, in round eight, Spinks suffered two falls: the first one was ruled a slip, but the second one was a controversial knockdown. As Spinks stepped on one of Qawi's feet, Qawi landed a blow to Spinks' body. Left without any choice (because Qawi had landed a punch the moment before Spinks fell), the referee issued an eight-second count after Spinks rose, making it officially Spinks' first career fall. The knockdown was controversial, because many continue