Japanese figure skating star Kaori Sakamoto made the last short program of her competitive career a memorable one, scoring a season-best 79.31 to take the lead at the world championships in Prague on Wednesday.The Milan Cortina Winter Olympic silver medalist heads into Friday's free skate ahead of compatriot Mone Chiba in second place on 78.45 points, with Amber Glenn of the United States third on 72.65.Japan's Olympic bronze medalist Ami Nakai placed eighth in the segment with 69.10.The 25-year-old Sakamoto is aiming for her fourth world title, the most by any Japanese figure skater, befor…READ FULL ARTICLE