Dustin Brown, Denis Kudla, Teymuraz Gabashvili and Lukas Lacko got into Us Open main draw after Federer, Gulbis, Robredo and Berdych pulled out.
The next alternate in the entry list is Spaniard Roberto Carballes Baena.
Seven main draw wild-cards were awarded to Argentinian Juan Martin Del Potro and to USA’s Ernesto Escobedo, Rajeev Ram, Frances Tiafoe, Bjorn Fratangelo, Mackenzie McDonald and Michael Mmoh.
Also, twelve alternates moved into the qualifying draw: Tristan Lamasine, Stefano Napolitano, Axel Michon, Marsel Ilhan, Joris De Loore, Lorenzo Giustino, Mitchell Krueger, Dmitry Popko, Benjamin Mitchell, David Perez-Sanz, Alexandre Sidorenko and Frank Dancevic.
Eight wild-cards for qualifying draw went to Americans Sekou Bangoura, Christian Harrison, Vasil Kirkov, Reilly Opelka, Thai-Son Kwiatkowski, Tennys Sandgren, Ryan Shane and Chris Eubanks.
