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Coordinates: 40°44′59.26″N 73°50′45.91″W  /  40.7497944°N 73.8460861°W  / 40.7497944; -73.8460861 US Open Official website Founded 1881 ; 137 years ago  ( 1881 ) Editions 138 (2018) Location New York City, New York, United States Venue USTA Billie Jean King National Tennis Center Surface Grass – outdoors (1881–1974) Clay – outdoors (1975–1977) Hard – outdoors (since 1978) [a] Prize money US$53 million (2018) [1] Men's Draw 128S / 128Q / 64D Current champions Novak Djokovic (singles) Jack Sock Mike Bryan (doubles) Most singles titles 7 Richard Sears William Larned Bill Tilden Most doubles titles 6 Richard Sears Holcombe Ward Women's Draw 128S / 128Q / 64D Current champions Naomi Osaka (singles) Ashleigh Barty CoCo Vandeweghe (doubles) Most singles titles 8 Molla Mallory Most doubles titles 13 Margaret Osborne duPont Mixed doubles Draw 32 Current champions Bethanie Mattek-Sands Jamie