Japan's Kaori Sakamoto is on track to win her fourth world title in the women's singles short programme at the world figure skating championships in Prague. The silver medalist at the recent Milano Cortina Olympics scored 79.31 points, followed by Mone ​Chiba of Japan who scored 78.45. American Amber Glenn came in third with 72.65. The competition was missing the reigning Olympic and world champion, Alyse Liu, due to a busy schedule.