Four-time Japanese national figure skating champion Satoko Miyahara, who placed fourth in the women's individual competition at the 2018 Pyeongchang Winter Olympics, announced Saturday she will retire at the end of the season.Miyahara was runner-up at the 2015 world championships at age 17 and placed second at the ISU Grand Prix Finals in 2015 and 2016.She won her fourth straight national title in 2017 after coming back from a hip stress fracture suffered earlier in the year.In her only Olympic appearance, Miyahara placed behind Canadian bronze medalist Kaetlyn Osmond, with Russians Alina Z…READ FULL ARTICLE