COPENHAGEN, DENMARK - DECEMBER 15: Valarie van Roon of The Netherlands, dives in with a clear lead during the Women's 4x50m Freestyle Relay on December 15, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
COPENHAGEN, DENMARK - DECEMBER 15: Femke Heemskerk of The Netherlands, dives in with a clear lead during the Women's 4x50m Freestyle Relay on December 15, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
COPENHAGEN, DENMARK - DECEMBER 15: Pavel Juraszek of Poland after the 50m Freestyle Final on December 15, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
