Diego Sebastián Schwartzman is an Argentine professional tennis player. He has won four ATP singles titles and reached his career-high singles ranking of world No. 8 in October 2020. As a clay court specialist, his best results have been on this surface. He is noted for his high-quality return game.

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.