Osaka reaches quarters at Pan Pacific Open
Osaka, who was broken twice early in the match, is looking to win her first title in her hometown after finishing runner-up in 2016 and 2018.
“The goal now is to finish the year as well as I can, to put all the energy which I have into this run in Asia and to play well in the next few weeks,” Kerber said.
“I know Madison really well, so I know what to expect,” Kerber said. “It will be interesting. We both know we have to play our best against each other.”
Elise Merterns also advanced, beating Hsieh Su-Wei 6-3, 1-6, 6-2 win.