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
Open Era tennis records – men's singles Open Era tennis records – men's singles The Open Era is the current era of professional tennis. It began in 1968 when the Grand Slam tournaments allowed professional players to compete with amateurs, ending the division that had persisted since the dawn of the sport in the 19th century. The first open event was the 1968 British Hard Court Championships held in April, followed by the inaugural open Grand Slam event, the French Open, a month later. Note the following: Spanning consecutive events Spanning non-consecutive events Consecutive per year totals Won at least 3 titles Reached at least 5 finals