Tennis: Japan’s Osaka through, Barty stunned

Osaka defeated China’s Zheng Saisai 6-1, 6-4. She is now the clear favourite for gold after Barty, the reigning Wimbledon champion, dropped serve twice in each set and made 55 unforced errors in a 6-4, 6-3 loss to Spain’s 48th-ranked Sara Sorribes Tormo.