COPENHAGEN, DENMARK - Aleksandr Popkov from Russia celebrates winning the Men's 50m Butterfly Final on December 16, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
COPENHAGEN, DENMARK - Aleksandr Popkov from Russia during the Men's 50m Butterfly Final on December 16, 2017 in Copenhagen, Denmark. (Photo by Andy Astfalck/Getty Images)
