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Malaisia's Apriyani Rahayu (L) returns the shuttlecock, next to team-mate Greysia Polii, to Japan's Mayu Matsumoto and Wakana Nagahara during the Women's doubles semi-final match at the BWF Badminton World Championships at the St Jakobshalle in Basel on August 24, 2019. (Photo by FABRICE COFFRINI / AFP) (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)

Malaisia's Apriyani Rahayu (L) returns the shuttlecock, next to team-mate Greysia Polii, to Japan's Mayu Matsumoto and Wakana Nagahara during the Women's doubles semi-final match at the BWF Badminton World Championships at the St Jakobshalle in Basel on August 24, 2019. (Photo by FABRICE COFFRINI / AFP) (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)
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BIRMINGHAM, ENGLAND - MARCH 09: Mayu Matsumoto (R) and Wakana Nagahara of Japan compete in the Women's Doubles semi finals match against Shiho Tanaka and Koharu Yonemoto of Japan on day four of the Yonex All England Open on March 9, 2019 in Birmingham, England. (Photo by Shi Tang/Getty Images)

BIRMINGHAM, ENGLAND - MARCH 09: Mayu Matsumoto (R) and Wakana Nagahara of Japan compete in the Women's Doubles semi finals match against Shiho Tanaka and Koharu Yonemoto of Japan on day four of the Yonex All England Open on March 9, 2019 in Birmingham, England. (Photo by Shi Tang/Getty Images)
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Getty Images Sport Shi Tang