Osaka broke in the fourth game of the third set to take a comfortable 3-1 lead. In the next game, Azarenka blew a golden opportunity to get back into the match, wasting all three break points as Osaka recovered from 0-40 down to hold for a 4-1 lead.
Under World Athletics guidelines introduced last year, Semenya would have to take testosterone-reducing drugs in order to compete in the races from 400m to a mile. But the 29-year-old has chosen not to do it.
David Kimuli, a sports fan, told Xinhua in a recent interview that despite the little resources invested in sports, local athletes continue to prove that a lot more can be achieved if more is invested.
In a message posted on Weibo on Friday, Wang, China's highest-ranked female tennis player, said she made the decision toughly and withdrew from the 2020 season.
Saturday saw Arsenal kick off the season with a comfortable 3-0 win away to Fulham, with new signing Willian turning in a man-of-the-match performance.
The Championship League has been expanded to a full World Snooker Tour ranking event this season, featuring 128 players, in three stages over 21 days.
Elsewhere on Sunday, VVV-Venlo booked a spectacular 5-3 win at FC Emmen, Heracles Almelo beat ADO Den Haag 2-0 and Vitesse was too strong for RKC Waalwijk, winning 1-0. The FC Utrecht-AZ match was postponed to give AZ more time to prepare for next Tuesday's match at Dynamo Kiev in the third qualifying round of the Champions League.
Elsewhere, SIPG established the advantage in the stoppage time of the first half, when Ricardo Lopes contributed a long diagonal pass from the right flank into the box, which was stopped by striker Lv Wenjun in front of the goal. Marko Arnautovic smashed in a volley in chaos.
A Premier League statement released on China's social media Weibo read: "Premier League chief executive Richard Masters promised to Chinese fans that they are working hard to find solutions to broadcast the matches in China. Unfortunately, the first round matches of the 2020-21 season won't be broadcast in China."
Sunday kicked off with Christian Tello's 94th minute goal giving Manuel Pellegrini a win in his debut as Betis coach and to ensure Pablo Machin begins his spell in charge at Alaves with a defeat.
It was the third upset of a seeded team for Siegemund and Zvonareva during the fortnight, having knocked off No.7 seeds Victoria Azarenka and Sofa Kenin in the second round before a stunning win over second seeds and defending champions Elise Mertens and Aryna Sabalenka in the quarterfinals.