The 2017 US Open was the 137th edition of tennis' US Open and the fourth and final Grand Slam event of the year. It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in New York City. Experimental rules featured in qualifying for the main draw as well as in the junior, wheelchair and exhibition events.
Stan Wawrinka and Angelique Kerber were the previous year's men's and women's singles champions. Neither managed to defend their title as Wawrinka withdrew before the start of the tournament due to a knee injury that ended his season, while Kerber lost in the first round to Naomi Osaka.
The men's singles tournament concluded with Rafael Nadal defeating Kevin Anderson in the final, while the women's singles tournament concluded with Sloane Stephens defeating Madison Keys in the final.