Pliskova, last year’s US Open runner-up, will next face either 37th-ranked compatriot Lucie Safarova or US 20th seed CoCo Vandeweghe to decide a berth in the semi-finals.
“It’s very good for Czech tennis that there are so many of us,” she said of the chance to play Safarova.
In her prior match, Pliskova faced a match point against China’s Zhang Shuai, a tense moment that helped her ensure there was no drama against Brady.
“I played well,” she said. “I really wanted to get the chance that I got after that match point. Definitely that match helped me to go through tough moments and this match I was much better.”
The victory kept Pliskova in contention to retain her top ranking after the Open. She must reach the final to stay number one.
Download our app and read this and other great stories on the move. Available for Android and iOS.
