The 1939 U.S. National Championships was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York City, New York. The tournament ran from September 7 until September 17. It was the 59th staging of the U.S. National Championships and the fourth Grand Slam tennis event of the year. US Open 1939: September 7–17, 1939 at West Side Tennis Club. Men's singles: Bobby Riggs — 2nd major title. Women's singles: Alice Marble — 4th major title. Wiki link