In pics: roller speed skating event at Summer Youth Olympics

Gold medalist Jhony Andres Angulo Reina (C) of Colombia, silver medalist Vincenzo Maiorca (L) of Italy and bronze medalist Merijn Scheperkamp of the Netherlands pose for photograph after the awarding ceremony of the men's combined of the roller speed skating event at the 2018 Summer Youth Olympic Games in Buenos Aires, Argentina on Oct. 8, 2018. (Xinhua/Li Ming)