While at Napoli, Maradona reached his peak by becoming the club's captain and guiding them to their first-ever Serie A Championship during 1986-87 season, followed by Coppa Italia in 1987, UEFA Cup in 1989 and Italian Supercup in 1990, his increasing cocaine use continued. He also faced a scandal in form of an illegitimate son, apart from having alleged friendship with Italian Mafia syndicate. (File | AP)