After more than 10 years as partners, two-time world women's badminton doubles champions Wakana Nagahara and Mayu Matsumoto have played their final match together.Nagahara plans to retire in March and study abroad in Canada with the aim of becoming involved in international sports exchanges, while Matsumoto will team up with former rival Yuki Fukushima to try to return to the pinnacle of women's doubles.On Nov. 10 in the northeastern Japan city of Akita, the Nagahara-Matsumoto pair, nicknamed "Naga-Matsu," ended their career together by beating Fukushima and Maiko Kawazoe in straight sets i…READ FULL ARTICLE