Hungarian teenager Kristof Milak has won the 200-metre butterfly at the 2019 FINA World Swimming Championships in Gwangju touching in at a time of 1:50.73 ahead of Japan's Daiya Seto (1:53.86) and South African Chad le Clos (1:54.15).
The 19-year-old athlete has surpassed American Michael Phelps' record of 1:51.51 that was set at the world championships in 2009.
The Budapest resident set a junior world record in the 100-metre in 2017 when the world championships took place in his hometown.