Perfect 10 (gymnastics) same competition, in the vault and floor exercise. Comăneci's coach, Béla Károlyi, having defected to the United States in 1981, subsequently coached Mary Lou Retton to gold at the 1984 Olympics in Los Angeles, where she scored 10s in the vault and floor exercise. The first man to score a perfect 10 in Olympic competition was the Russian Alexander Dityatin, who received the score in the vault on the way to a record-breaking eight medals in the 1980 Olympics in Moscow. Among other men to achieve the score was Comăneci's future husband, Bart Conner, who received two 10s in Los
Gymnastics at the 1976 Summer Olympics – Women's uneven bars to the apparent impossibility of a perfect score, so at the time, it only read, "1.00". Nadia would later follow her first perfect score with two others in the optional round and the final, to finish on a perfect score of 20. Eighty-six gymnasts competed in the compulsory and optional rounds on July 18 and 19. The six highest scoring gymnasts advanced to the final on July 22. Each country was limited to two competitors in the final. Half of the points earned by each gymnast during both the compulsory and optional rounds carried over to the final. This constitutes