Karolina Pliskova has flown under the radar at the Australian Open this year and the former world number one moved quietly into the quarter-finals on Kia Arena on Monday after many of the top seeds had scattered to the winds. Still effectively on the comeback trail after an arm fracture prevented her from playing in Australia last year, the Czech reached the last-eight with a 6-0 6-4 win over China’s Zhang Shuai on the least prestigious court still being used.
