ITF title in Surbiton, reached the semifinals at Nottingham (losing to Johanna Konta), and won another ITF title in Ilkley, to return to the world top 100 (No. 85) for the first time in over a year. The grass-court season culminated in her reaching the semifinals at the Wimbledon Championships, having never before advanced beyond the third round of any major event. Her Wimbledon run included victories over the world No. 3, Karolína Plíšková, in the second round, and the world No. 25 Vandeweghe in the quarterfinals, and ended with a loss to eventual champion Garbiñe Muguruza in the semifinals. Ranked No. 33 after Wimbledon, she broke into the top 30 for the first time in September 2017, after reaching the third round of the US Open, where she again lost to Muguruza. In November, she qualified for the Elite Trophy, and achieved a career-best year-end ranking of world No. 20. 2018 Rybáriková started the season at the Sydney International where she lost in the first round to qualifier CiCi Bellis. Seeded 19th at the Australian Open, she reached the fourth round in which she was defeated by second seed and eventual champion, Caroline Wozniacki. 2019 Rybáriková started her 2019 season at the Brisbane International where she lost in the first round to Donna Vekić. At the Australian Open, Rybáriková was defeated in the first round by eighth seed and eventual finalist, Petra Kvitová. In March, she competed at Indian Wells and lost in the first round to Tatjana Maria. In Miami, she was defeated in the second round by 15th seed Julia Görges. Seeded eighth at the Monterrey Open, Rybáriková reached the semifinal where she lost to second seed, defending and eventual champion, Garbiñe Muguruza. Beginning her clay-court season at the Rabat Grand Prix, Rybáriková was defeated in the first round by qualifier Ysaline Bonaventure. At the Madrid Open, she retired during her first-round qualifying match against Irina Bara. At the French Open, Rybáriková lost in the first round to Johanna Larsson. Seeded fifth at the Surbiton Trophy, she made it to the final where she was defeated by third seed and defending champion, Alison Riske. At the Nottingham Open, she retired during her first-round match against Astra Sharma due to a respiratory infection. As the top seed at the Ilkley Trophy, Rybáriková lost in the second round to Beatriz Haddad Maia. At the Wimbledon Championships, she stunned tenth