Yehor Dementyev of Ukraine competes during the men's C5 4km individual pursuit gold medal final of the 2018 Para-cycling Track World Championship at the Olympic Park velodrome in Barra, Rio de Janeiro, Brazil, on March 24, 2018. Yehor Dementyev took the gold by defeating Jonathan Gildea of Great Britain with 4 minutes and 31.619 seconds. (Xinhua/Li Ming)