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
2008 US Open (tennis) Briton, male or female, since Greg Rusedski at the 1997 Open to reach the final of a Grand Slam singles tournament. Nadal, who was also playing in his first US Open semifinal, said that, with the number of matches he had played recently taken into consideration, he was pleased with his overall performance at the Open. Had the match gone to seeding, Nadal would have been facing his rival, Federer, for a third time in a Grand Slam final in 2008, after having already beaten him at the French Open and Wimbledon. The women's singles final was also played, and