Japanese skaters Kaori Sakamoto and Yuma Kagiyama took the early leads at the ISU Grand Prix of Figure Skating's NHK Trophy on Friday after the women's and men's short programs, respectively.Sakamoto recorded the highest women's short program score of the season, 78.93 points, at Yoyogi National Stadium as the fourth event of the six-stop Grand Prix season got under way. The top three finishers among the men and women were all Japanese."From start to finish, I was calm and able to concentrate," Sakamoto said. "I think I was rewarded with a high score for the triple lutz I've worked hard on.…READ FULL ARTICLE