Michael Jordan
Before he was the Greatest of All Time, he was an Olympian. Michael Jordan entered his first Olympics straight out of college in 1984. He helped Team USA take home the gold in 1984 and 1992. He was welcomed into the NBA with open arms and won six championships with the Chicago Bulls. He retired in 2003, but he's been quite busy! He has an incredibly successful sports apparel line and received the title of a billionaire in 2015.