Ichika Kajimoto won Japan's first gold medal at the aquatics world championships in Singapore on Saturday after finishing top in a new women's open water discipline, the 3-kilometer knockout sprint.The 21-year-old had already become the first Japanese medalist at the ongoing worlds by winning bronze in the women's 5-km open water event on Friday."Winning a medal at the world championships wasn't something realistic, and I still can't believe I got the bronze medal yesterday and the win today," Kajimoto said. "I'm really happy."The 3-km knockout sprint features a 1500-meter heat, a 1000-mete…READ FULL ARTICLE