Osaka, in Stuttgart and retiring in her third-round match against fellow Croatian Petra Martić in Madrid due to a foot injury. Seeded 23rd at the French Open, Vekić advanced to the fourth round for the first time in her career, after upsetting world No. 15, Belinda Bencic, in the third round. She then lost to Johanna Konta, in straight sets. Opening the grass-court season in Nottingham, Vekić reached her second final of the year before falling to former world No. 4, Caroline Garcia, despite leading by a set and a break. After an opening-round loss to French Open champion Ashleigh Barty in Birmingham, Vekić was tabbed as a potential dark horse in the ladies' singles draw at Wimbledon. However, she was upset in three sets in her first round match by eventual quarterfinalist, American Alison Riske. Rebounding from this disappointment, Vekić opened the summer hardcourt season with a semifinal showing in San Jose before making the third round in Cincinnati, where she fell to Venus Williams. Seeded 23rd at the US Open, Vekić defeated Richèl Hogenkamp, Kaia Kanepi, Yulia Putintseva and 26th seed Julia Görges to advance to her first Grand Slam quarterfinal, becoming the first Croatian woman to reach the last eight at the US Open since Ana Konjuh in 2016. There, she was beaten by the 13th seed Bencic, in straight sets. Despite recording just two match wins in her next five tournaments following the US Open, Vekić qualified for the second tier year-end singles tournament, the WTA Elite Trophy, for the first time in her career. Drawn in the Azalea Group with top seed Bertens and Dayana Yastremska, she fell in straight sets in both her matches, ending her season. Nonetheless, Vekić finished the year ranked world No. 19, her first year-end top 20 finish. 2020: Australian Open and US Open third round, out of top 20 Vekić kicked off her 2020 season at the Brisbane International. She lost in the first round to qualifier Yulia Putintseva. Playing at the first edition of the Adelaide International, Vekić reached the quarterfinal where she was defeated by eventual finalist, Dayana Yastremska. Seeded 19th at the Australian Open, Vekić beat 2008 champion and former world No. 1, Maria Sharapova, in the first round, and Alizé Cornet in the second. She lost in the third round to Iga Świątek. At the St. Petersburg Ladies' Trophy, Vekić, the seventh seed and the