Novak Djokovic advanced to the China Open final on Monday after Daniil Medvedev was disqualified late in the second set, when a ball that came off the Russian’s racket hit a spectator. Daniil Medvedev had hit the ball into the stands, where it struck a spectator in the face. Key points and original sources are listed below.

• Novak Djokovic advanced to the China Open final on Monday after Daniil Medvedev was disqualified late in the second set, when a ball that came off the Russian’s racket hit a spectator. A man sitting in the stands behind Medvedev’s side of the court was seen ho...S1

• Daniil Medvedev had hit the ball into the stands, where it struck a spectator in the face.S2