the first round but this time to Tímea Babos at the Western & Southern Open. Stosur then played at the US Open and reached the fourth round at the US Open for the first time since 2012. In the first round she got revenge on Tímea Babos, to whom she lost the previous week. She backed this up with wins over Evgeniya Rodina and 16th-seeded Sara Errani. She then lost to eventual champion Flavia Pennetta. 2016: Another Grand Slam semifinal Stosur started her 2016 season at the Brisbane International, where she won her opening match against qualifier Jana Čepelová, but lost her second-round match to sixth seed Carla Suárez Navarro. She then reached the quarterfinals in Sydney, defeating Roberta Vinci and Daniela Hantuchová, before falling to eventual finalist Monica Puig. She then suffered an opening round loss at the Australian Open to Kristýna Plíšková in straight sets. In February, she won both singles rubbers in the World Group II, against Čepelová and Anna Karolína Schmiedlová, both in straight sets. In the North American hardcourt swing, Stosur reached the last 16 in Indian Wells, after three-set wins over Yanina Wickmayer and Christina McHale. She then lost to eventual champion Victoria Azarenka. She lost her opening match in Miami to Julia Görges in three sets. She began her clay-court season in Charleston, falling in the quarterfinals to Sara Errani in straight sets. Despite losing both rubbers in the World Group Play-offs in Brisbane to Christina McHale and CoCo Vandeweghe, Stosur was able to bounce back and reach the final in Prague, losing to Lucie Šafářová. She was then able to carry this form into Madrid, where she reached the semifinals, before losing to Simona Halep, winning only two games. She then won her opening match at the Rome Masters against Alison Riske, before losing to Kuznetsova in the second round. She then participated in the Internationaux de Strasbourg, where she won her first two matches in straight sets, before withdrawing from her quarterfinal match against Caroline Garcia, due to a wrist injury. At the French Open, Stosur beat Misaki Doi and Zhang Shuai in her opening two matches. She then beat 2015 finalist Lucie Šafářová to reach the fourth round in Paris for a fifth time. In a rain-delayed match stretched over three days, Stosur then came back from 5–3 down in the opening set to beat world No. 6, Simona Halep,