1952 U.S. National Championships (tennis)  The 1952 U.S. National Championships (now known as the US Open) was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York, United States. The tournament ran from 29 August until 8 September. It was the 72nd staging of the U.S. National Championships, and the fourth Grand Slam tennis event of the year. Frank Sedgman defeated Gardnar Mulloy 6–1, 6–2, 6–3   Maureen Connolly defeated Doris Hart 6–3, 7–5   Mervyn Rose / Vic Seixas defeated Ken McGregor / Frank Sedgman 3–6, 10–8, 10–8, 6–8, 8–6    Shirley Fry / Doris Hart defeated Louise Brough / Maureen Connolly 10–8, 6–4    Doris Hart / Frank Sedgman defeated Thelma Coyne Long / Lew Hoad 6–3, 7–5