Michael Spinks net worth: Michael Spinks is a retired American boxer with an estimated net worth of $100 thousand dollars. Born in St. Louis, Missouri, Michael Spinks began to gain notice in the early 70s, as he won multiple amateur boxing titles. Between 1974 and 1976, he won the Golden Gloves Light Middleweight Championship, won Silver at the National AAU Championships, won the National Golden Gloves Middleweight Championship, and the Gold Medal at the 1976 Montreal Olympics. He turned pro the following year, and went on to a winning streak that almost stretched the length of his professional career. He fought thirty-two bouts before retiring, and won thirty-one of them. Twenty-one of his wins were via knockout. His final fight in 1988 was his only loss as a professional, when Mike Tyson knocked him out. He has remained out of the public eye since retiring, though he occasionally visits schools and trains fighters.