Caeleb Dressel Breaks Michael Phelps' 100M Butterfly World Record

United States swimmer Caeleb Dressel broke Olympic legend Michael Phelps' world record in the 100-meter butterfly during a semifinal heat at the swimming world championships on Friday.

The 22-year-old Dressel finished with a time of 49.50 seconds, besting Phelps' mark—set in 2009—by 0.32 seconds.

According to Gracenote Olympic, the margin between Dressel's time and Phelps' was noteworthy:

Per ESPN News Services, Dressel's qualifying time was 1.44 seconds clear of his closest competitor, Russia's Andrei Minakov.

This comes after Dressel narrowly missed out on the world record in the 100-meter freestyle by .05 seconds earlier in the week:

Dressel was a member of Team USA during the 2016 Summer Olympics in Rio de Janeiro. He teamed up with Phelps, Ryan Held and Nathan Adrian in the 4×100-meter freestyle relay to capture his first Olympic gold and added added a second gold with the 4×100-meter medley relay team.

Dressel will have the opportunity to improve his world record when he goes for gold in the final on Saturday night.