One year out from the Olympics, the replacement for Michael Phelps may have arrived.

Kristof Milak, a 19-year old Hungarian, ran right past Phelps’ world record in the 200-meter butterfly at the world championships on Wednesday. He came in at 1:50.73, .78 seconds faster than the pace Phelps set at the 2009 World Championships.

“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.”

Milak also holds the 200-meter fly gold from the 2018 European championships, as well as the current world junior record. Still, these world championships in Gwangju, South Korea, is where he’s making his name known.

He was on pace to break Phelps’ record at the split, and his lead grew to decisive from there.

“It happened because there was a kid who wanted to do it, who dreamed of doing it, who figured out what it would take to do it, who worked on his technique until it was beautiful and who put in the really, really hard work that it takes to do it,” Phelps told The Times. “My hat’s off to him.”

Phelps, who retired after the 2016 Olympics, held the record for 18 years, first breaking it at age 15, then beating his own number from there. He won four Olympic medals in the event, adding another four in the 100m version.

Next year at the Tokyo Games, Milak could win his first.