Tennis: Naomi Osaka pulls out of WTA Finals with shoulder injury

World No. 3 Naomi Osaka of Japan has pulled out of the WTA Finals due to a right shoulder injury, the tournament's organizers said Tuesday.Osaka opened the season finale of the women's tour with a three-set win over Petra Kvitova on Sunday, and was scheduled to face No. 1 Ashleigh Barty of Australia on Tuesday evening."I'm disappointed to have to withdraw from the Finals," Osaka said, according to organizers. "It has been a great event in Shenzhen, and it's the biggest WTA event of the year."Related coverage:Tennis: Naomi Osaka to choose Japan for Tokyo OlympicsREAD FULL ARTICLE