19-year-old Kristof Milak breaks Michael Phelps' 200m fly world record

Kristof Malik clocked in at 1:50.73, shaving off 0.78 seconds of Phelps' record.

Michael Phelps’ 18-year-reign as the world-record holder in the 200m butterfly came to an end Wednesday.

Phelps, 34, clocked in with that time in 2009 at the worlds in Rome, but held the title since 2001.

"As frustrated as I am to see that record go down, I couldn’t be happier to see how he did it,” Phelps told the New York Times. “That kid’s last 100 was incredible. He put together a great 200 fly from start to finish.”

Daiya Seto, of Japan, came in second place at 1.53.86.