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Netherlands' Iris Tabeling, left, and Switzerland's Nadia Fankhauser return a shuttlecock to Thailand's Chayanit Chaladchalam and Phataimas Muenwong during their women's doubles first round match at the BWF Badminton World Championships in the St. Jakobshalle in Basel, Switzerland, on Tuesday, August 20, 2019. (KEYSTONE/Georgios Kefalas)