2016 US Open – Women's Singles No. 1 ranking at the start of the tournament. Former world No. 1 and 2008 French Open champion Ana Ivanovic played the final match of her professional career in the first round, when she lost to Denisa Allertová. She would announce her retirement prior to the 2017 season because of ongoing injuries. 2016 US Open – Women's Singles Flavia Pennetta was the defending champion, but retired from professional tennis at the end of the 2015 season. Angelique Kerber won the title, defeating Karolína Plíšková in the final, 6–3, 4–6, 6–4. It was Kerber's second Grand Slam singles title. She became
2017 French Open – Women's Singles 2017 French Open – Women's Singles Garbiñe Muguruza was the defending champion, having won the tournament in 2016, but she was defeated in the fourth round by Kristina Mladenovic. This was the first time at the French Open since 1977, and any Grand Slam event since the 1979 Australian Open that no former Grand Slam champion have reached the quarterfinals. Jeļena Ostapenko won the title, defeating Simona Halep in the final, 4–6, 6–4, 6–3. This was Ostapenko's first WTA Tour-level singles title. She became the first Latvian player, male or female, to win a Grand Slam singles tournament, the youngest