Nadia Comaneci

Romanian gymnast Nadia Comaneci made history at the 1976 Montreal Olympics as the first gymnast awarded a perfect score of 10.0 — an achievement so unprecedented the Olympic scoreboard could only display "1.00" as it had no provision for a perfect score. Comaneci earned 7 perfect 10s at Montreal, winning 3 gold medals, and followed with 2 more gold medals at the 1980 Moscow Olympics. She retired at 19 with 5 Olympic gold medals and 9 world championship medals.