Swimming at the 2008 Summer Olympics in the 100 metres butterfly, both set in Sydney, remained Olympic records. Michael Phelps of the United States also broke the record for the most gold medals ever won by an Olympian with a total of 14; 8 of which were won during the 2008 Summer Olympics - this was also a world record. <nowiki>*</nowiki> World record split from the 4 × 100 m freestyle relay Note: At the 4 × 100 m freestyle relay final, anchor Jason Lezak swam the fastest 100 m split (46.06); however, this is not considered an official FINA record, as he did not swim
Jamaica at the 1964 Summer Olympics Jamaica at the 1964 Summer Olympics Jamaica competed at the 1964 Summer Olympics in Tokyo, Japan. This was the first time it competed as an independent nation since Jamaica became independent in 1962, whereas previously the country had been a British Crown Colony that in the previous Olympics was represented in a composite British West Indies team. 21 competitors, 17 men and 4 women, took part in 16 events in 4 sports. In this Olympics, they won no medals. This Olympics and the 1956 Summer Olympics are the only Olympics where Jamaica won no medals at all. One shooter represented