Stat of the Day: Petra Kvitova reaches 99th WTA quarterfinal of career in Ostrava
And she did it by recording the 60th Top 10 win of her career, needing eight match points to make it past Paula Badosa.
The No. 2-ranked Tunisian defeated American Ann Li in her first match at the new WTA 250 event in her home country.
The former No. 7 took out the current No. 1 at the ATP 500 event in Astana, Kazakhstan on Tuesday, 7-5, 6-3.
Meanwhile, Taylor Fritz is now one spot away from the Top 10, and Rajeev Ram becomes No. 1 in doubles.
He just won his third title of the year in Tel Aviv on hard courts, having already won Rome and Wimbledon.
US Open semifinalist Tiafoe is playing the Rakuten Japan Open Tennis Championships in Tokyo next week.
Before this week’s ATP event in Tel Aviv, the 21-time Grand Slam champion’s only tour-level appearance in Israel was in a Davis Cup tie in 2006—and he didn’t drop a set.