Argentina's Juan Martin Del Potro plays his semi-final match at the 2017 US Open at Billie Jean National Tennis Center in New York City, NY, USA on September 8, 2017. Del Potro was defeated by Spains' Rafael Nadal plays his semi-final match at the 2017 US Open at Billie Jean National Tennis Center in New York City, NY, USA on September 8, 2017. Nadal defeated Juan Martin Del Potro Del Potro (4-6, 6-0, 6-3, 6-2). Photo by Corinne Dubreuil/ABACAPRESS.COM