Jan Čejka (born 29 May 2001) is a Czech

swimmer Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic ...

. He competed in the men's 100 metre backstroke at the

2020 Summer Olympics The , officially the and also known as , was an international multi-sport event held from 23 July to 8 August 2021 in Tokyo, Japan, with some preliminary events that began on 21 July. Tokyo was selected as the host city during the ...

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* 2001 births Living people Czech male swimmers Olympic swimmers of the Czech Republic Swimmers at the 2020 Summer Olympics Place of birth missing (living people) 21st-century Czech people {{CzechRepublic-swimming-bio-stub