Video PlayerClose
Germany's Kai Schaefer returns the shuttle during the men's singles first round match against China's Lu Guangzu at the BWF World Championships 2019 in Basel, Switzerland, Aug. 19, 2019. (Xinhua/Li Jundong)
Germany's Kai Schaefer returns the shuttle during the men's singles first round match against China's Lu Guangzu at the BWF World Championships 2019 in Basel, Switzerland, Aug. 19, 2019. (Xinhua/Li Jundong)