Nadia Comaneci

Nadia Comaneci made history at the 1976 Montreal Olympics by scoring the first perfect 10.0 in gymnastics at age 14, a feat that remains the benchmark for technical excellence in the sport. She won nine Olympic medals (five gold, three silver, one bronze) across 1976 and 1980, including three gold medals on the balance beam, an apparatus where her difficulty score averaged 9.95.