Naomi Osaka of Japan serves while competing against Julia Goerges of Germany in their third round women's singles match in the China Open at the National Tennis Stadium in Beijing, on October 4, 2018.
Naomi Osaka continued her stunning form at the China Open on Thursday, easing past Julia Goerges to reach the quarter-finals in Beijing.
German second seed Angelique Kerber is out of the China Open after losing in three sets to China's Zhang Shuai.
Speaking to the press after her win, Zhang said: "Being able to compete in the China Open, being in the centre court, this is something I'm really proud of in my career".
"It's something that I've been working on throughout this whole year and I think it finally clicked, or at least it's more consistent", she said. "I'm not sure how many I hit today, but sometimes previous year I think I was hitting a lot".
The Chinese world No. 45 emerged from a see-saw battle with the third seed.
Kerber, speaking to Sky Sports after the game, spoke of a knee injury that had hindered her movement during the game, but insisted it did not affect her game.
Her chopstick skills might not be the best but Naomi Osaka says an improvement in her focus is behind a run of success that culminated in winning the US Open.
Yet Kerber struggled to keep her unforced errors count down, making 36 in the match, and her challenge ended in a final set rout.
The winners face each other in today's quarter-finals along with Jan-Lennard Struff against Denis Shapovalov; Daniil Medvedev against Milos Raonic; and Stephanos Tsitsipas against Kei Nishikori.