Budapest - Caeleb Dressel of the United States won the men's 50m freestyle title at the world championships on Saturday to complete the sprint double in Budapest.
Dressel, who also won the men's 100m freestyle gold on Thursday, clocked 21.15 seconds with Brazil's Bruno Fratus taking silver at 0.12 back and Britain's Ben Proud earning bronze at 0.28.
Just half an hour later, Dressel came out and blasted his way to victory in the men's 100m butterfly final.
The 20-year-old has now won five golds in Budapest -- three individuals titles, including the 100m freestyle, plus victories for the USA in the men's 4x100m freestyle and mixed 4x100m medley.
He could finish with three golds in one night with the 4100 mixed freestyle relay still to come.
Fratus was pleased with his second silver of the week after finishing second with Brazil in the men's 4x100m freestyle.
"I'm feeling like the silver surfer -- I'm feel amusing, it's been the best week of my life, the best to races of my life," said the 28-year-old.
"I just feel happy, because I did the hard work, I bust my ass off.
"I don't consider myself a talented guy, but I'm sure a hard worker.
"I expected a good time and I got it."
Britain's Proud, who won the 100m butterfly title on Monday, was happy with his second medal of these championships and paid tribute to Dressel, who collected his fourth gold of these world championships.
"It's a really good outcome for me to get third," said the 22-year-old.
"I was racing against a guy going 21.1 -- you don't see that every day.
"It's not often that someone comes along like Caeleb, a really talented swimmer, so third place is better than I expected."