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Coached by Eiji Takeuchi
Named after former Top 20 player Naoko Sawamatsu; brother is named after Shuzo Matsuoka; says family is tennis crazy
Started playing tennis at age 10
Winner (2): 2019 - Hiroshima; 2015 - Tashkent.
Finalist (3): 2017 - Kuala Lumpur, Nanchang; 2016 - Tashkent.
Winner (2): 2019 - Hiroshima (w/Doi); 2017 - Monterrey (w/Rosolska)
Finalist (4): 2021 - Istanbul (w/Ninomiya); 2019 - Tianjin (w/Kato); 2018 - Taipei City (w/Kalashnikova); 2017 - Tashkent (w/Kalashnikova)
Japanese Fed Cup Team, 2016, 2019; Japanese Olympic Team, 2016.
Career in Review
2019 - Won second WTA title at Hiroshima (d. Doi in final); reached 2r once; fell 1r four times and in qualifying on seven occasions (incl. all four majors); won one WTA doubles title; won two doubles titles on ITF Circuit.
2018 - Reached 2r five times; fell 1r five times (incl. Australian Open) and in qualifying four times (incl. Roland Garros and US Open); won one singles and one doubles title on ITF Circuit.
2017 - Third straight Top 100 season (finishing No.92); runner-up at Kuala Lumpur (l. to Barty) and Nanchang (l. to Peng); reached 2r three times (incl. US Open); fell 1r 12 times (incl. other three majors) in qualifying on nine occasions; won one WTA doubles title.
2016 - Second Top 100 season (finishing No.84); runner-up at Tashkent (l. to Kr.Pliskova); QF at Auckland (l. to Goerges), Istanbul (l. to Buyukakcay) and Florianopolis (l. to Begu); reached 2r six times (incl. Olympics); fell 1r (incl. all four majors) 11 times and in qualifying on four occasions.
2015 - First Top 100 season (finishing No.78); won one WTA title at Tashkent (d. Vekic in final); made Top 100 debut afterwards on October 5 (rose from No.117 to No.76); reached 2r once; fell 1r once and in qualifying four times (incl. Wimbledon and US Open); also won three singles titles and two doubles titles on ITF Circuit.
2014 - Fell in WTA qualifying four times (incl. US Open).
2013 - Fell in WTA qualifying twice; won one singles title and one doubles title on ITF Circuit.
2012 - Played first events of career on ITF Circuit, winning three singles titles and one doubles title.