DeNá · CZE
Yumjav is a swimmer from Czechia, a butterfly specialist and a sprinter, with an official competitive record verified in the Swimer directory.
His recorded career begins in 2026 in Náchod, where he raced the 50 butterfly in 53.39. He started out alongside TJ Delfín Náchod, z.s..
His signature event is the 50 butterfly, the event he has raced the most. Butterfly is the backbone of the whole record: 1 meets and 2 recorded swims.
His fastest 50 butterfly stands at 53.39, set in short course (25 m) at Náchod.
He has raced for DeNá.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated March 23, 2026 in Náchod, with 2 swims: 53.39 in the 50 butterfly and 1:02.30 in the 50 butterfly, all in short course (25 m) and 1 PB improvement. He holds 1 current event personal bests across 2 verified official swims.