In pics: All England Badminton 2020 day 4

Chinese Taipei's Chou Tien Chen (L) hands back Denmark's Anders Antonsen's racquet as Antonsen retires injured during the men's singles semifinal match All England Badminton 2020 in Birmingham, Britain on March 14, 2020. Chou Tien Chen passed through to the final after Anders Antonsen retired injured during the first game. (Photo by Tim Ireland/Xinhua)