COPENHAGEN, DENMARK - DECEMBER 17: Kira Toussaint of The Netherlands during the Women's 4x50m Medley Relay Heats on December 17, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
COPENHAGEN, DENMARK - DECEMBER 17: Mikhail Vekovishchev of Russia during the Men's 4x50m Medley Relay Heats on December 17, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
