Japanese tennis star Naomi Osaka has withdrawn from the WTA Finals with a right shoulder injury.
Osaka had been taking part in the finals in Shenzhen, China, for the second year in a row. The tournament is played by the world's top eight players by point rankings.
Osaka won her match on Sunday, but said the pain in her right shoulder had become worse.
The organizer quoted Osaka as saying she is disappointed to have to withdraw from the event.