Italy's Gregorio Paltrinieri clocked the second-quickest time in history in the men's 1,500m freestyle final ©Getty Images

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Gregorio Paltrinieri of Italy won the men's 1,500m freestyle final for the third time at the FINA World Championships ©Getty Images
Gregorio Paltrinieri of Italy won the men's 1,500m freestyle final for the third time at the FINA World Championships ©Getty Images
In a bizarre incident in the men's 50m backstroke final, Hunter Armstrong of the United States, right, was awarded the gold medal after compatriot Justin Ress, left, was initially disqualified before being reinstated as the champion ©Getty Images
In a bizarre incident in the men's 50m backstroke final, Hunter Armstrong of the United States, right, was awarded the gold medal after compatriot Justin Ress, left, was initially disqualified before being reinstated as the champion ©Getty Images
Rūta Meilutytė of Lithuania claimed her first gold medal at a FINA World Championships since 2013 in the women's 50m breaststroke ©Getty Images
Rūta Meilutytė of Lithuania claimed her first gold medal at a FINA World Championships since 2013 in the women's 50m breaststroke ©Getty Images
Sarah Sjöström of Sweden won her 19th individual medal at the World Championships with victory in the women's 50m freestyle ©Getty Images
Sarah Sjöström of Sweden won her 19th individual medal at the World Championships with victory in the women's 50m freestyle ©Getty Images
Canada's Summer McIntosh set a world junior record in the women's 400m individual medley on her way to winning a second gold medal in Budapest ©Getty Images
Canada's Summer McIntosh set a world junior record in the women's 400m individual medley on her way to winning a second gold medal in Budapest ©Getty Images
Italy's men's 4x100m medley relay success was a first relay gold medal at the World Championships ©Getty Images
Italy's men's 4x100m medley relay success was a first relay gold medal at the World Championships ©Getty Images
The US clinched their 17th swimming gold medal in Budapest in the women's 4x100m medley relay ©Getty Images
The US clinched their 17th swimming gold medal in Budapest in the women's 4x100m medley relay ©Getty Images
Italy's Giorgio Minisini, left, and Lucrezia Ruggiero, right, won their second artistic swimming golds of the World Championships in the mixed duet free routine final ©Getty Images
Italy's Giorgio Minisini, left, and Lucrezia Ruggiero, right, won their second artistic swimming golds of the World Championships in the mixed duet free routine final ©Getty Images
Ukraine made it back-to-back world titles in the women's team highlight routine event at the World Championships ©Getty Images
Ukraine made it back-to-back world titles in the women's team highlight routine event at the World Championships ©Getty Images