PLČB · CZE
Josef is a swimmer from Czechia, a butterfly specialist, whose official competitive record spans 5 seasons, 6 years and 16 meets.
His recorded career begins in 2021, and one of his earliest marks still on file is the 400 butterfly in 4:58.36, raced in Olomouc. He started out alongside PLAVÁNÍ České Budějovice, z.s..
His signature event is the 100 butterfly, the event he has raced the most, followed by the 50 butterfly and 200 butterfly. Butterfly is the backbone of the whole record: 13 meets and 24 recorded swims.
His fastest 100 butterfly stands at 1:00.60, set in long course (50 m) at Plzeň - Slovany.
After a 2-year break between 2021 and 2023, he came back to racing and the record picks up again in 2023. 2026 is the busiest season on record, with 16 verified individual swims.
Those meets span 8 different venues (České Budějovice, Písek, Chomutov and Prachatice…). He has raced for PLČB.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated September 12, 2026 in Chomutov, with 6 swims: 30.03 in the 50 butterfly, 26.30 in the 50 butterfly and 1:06.67 in the 100 butterfly, all in short course (25 m) and 5 PB improvements. He holds 16 current event personal bests and 27 all-time PB improvements across 29 verified official swims.