Kaori Sakamoto upstaged Grand Prix Final champion Rika Kihira and four-time champion Satoko Miyahara to win the women's competition at the figure skating national championships on Sunday.On a night when Japan's top women skaters put on a series of superb free programs, Kihira set an improbably high target with a 223.76 total, but Sakamoto pulled out a clutch performance as the night's final skater at the Towa Pharmaceutical Ractab Dome in Kadoma, Osaka Prefecture, to earn 228.01 points overall.The 18-year-old Sakamoto, second in Friday's short program with a 6.9-point cushion over Kihira, s…READ FULL ARTICLE