Tokyo Olympics 2020: Djokovic, Osaka cruise as women's seeds tumble

Osaka raced into the last 16 as she powered past Switzerland's Viktorija Golubic 6-3, 6-2 in just over an hour

Tokyo Olympics 2020: Djokovic, Osaka cruise as women's seeds tumble
Osaka raced into the last 16 as she powered past Switzerland's Viktorija Golubic 6-3, 6-2 in just over an hour