Players compete at ongoing Gwangju 2019 FINA World Championships

Gold medalist Caeleb Dressel (C) of the United States, silver medalist Oleg Kostin (L) of Russia and bronze medalist Nicholas Santos of Brazil pose for photos during the awarding ceremony of the men's 50m butterfly final at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 22, 2019. (Xinhua/Tao Xiyi)