| Personal information | |
|---|---|
| Nationality | Czech | 
| Born | 10 May 1990 | 
| Sport | |
| Sport | Swimming | 
| Strokes | Butterfly | 
| Club | Slávia VŠ Plzeň (2001-2020); Ústí Swimming Academy (2020 - present) | 
Jan Šefl (born 10 May 1990) is a Czech swimmer. He competed in the men's 50 metre butterfly event at the 2017 World Aquatics Championships.[1][2] He represented the Czech Republic in men's 100 metre butterfly event at the 2020 Summer Olympic Games in Tokyo.[3][4] He holds the men's Czech national record in the event.[5]
References
- ↑ "Heats results". FINA. Archived from the original on 28 July 2017. Retrieved 29 July 2017.
 - ↑ "2017 World Aquatics Championships > Search via Athletes". Budapest 2017. Archived from the original on 22 October 2018. Retrieved 29 July 2017.
 - ↑ "Competition Results: Heats Summary". FINA. Retrieved 4 October 2023.
 - ↑ Keith, Braden (4 May 2021). "JAN SEFL BREAKS CZECH NATIONAL RECORD; QUALIFIES FOR FIRST OLYMPICS AT AGE 30". Swim Swam News. Retrieved 4 October 2023.
 - ↑ "Rekordy". Český svaz plaveckých sportů. Retrieved 4 October 2023.
 
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