Caeleb Dressel added to his gold medal collection Saturday, and took down one - and nearly two - of Michael Phelps' records in the process.

The Clay High School graduate won the men's 100-meter butterfly, setting a meet record Saturday at the Pan-Pacific Championships in Tokyo.

Dressel launched rapidly on his way to a 100 fly victory in a 50.75, more than half a second clear of American teammate Jack Conger. His time broke Phelps' meet record of 50.86 from 2010.

Dressel also led off the men's 4x100-meter relay squad, with Blake Pieroni, Zach Apple and Nathan Adrian, to an apparent meet record of 3:11.67. That would have surpassed the competition record of 3:11.74, set in 2010 by the team of Phelps, Ryan Lochte, Jason Lezak and Adrian.

However, officials disqualified the Americans after the meet, determining that Pieroni and Apple swam their legs in the incorrect order. That handed the gold to Brazil, with Australia second and Japan third.

Dressel has won three medals so far at the four-day meet for swimmers from North America, South America, Asia and Australia.

He is scheduled to swim Sunday in the 50 freestyle, among his best events, and possibly the 4x100 medley relay as well. Bolles product Ryan Murphy enters as a favorite in the 200 backstroke.