1971 US Open (tennis)

The 1971 US Open was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club in Forest Hills, Queens, in New York City, USA. The tournament ran from 1 September until 12 September. It was the 91st staging of the US Open, and the fourth Grand Slam tennis event of 1971.

Men's singles
🇺🇸 Stan Smith defeated Jan Kodeš, 3–6, 6–3, 6–2, 7–6(5–3)
 * • It was Smith's 1st career Grand Slam singles title and his 1st and only at the US Open.

Women's singles
🇺🇸 Billie Jean King defeated 🇺🇸 Rosemary Casals, 6–4, 7–6
 * • It was King's 6th career Grand Slam singles title, her 2nd during the Open Era and her 2nd at the US Open.

Men's doubles
🇦🇺 John Newcombe / 🇬🇧 Roger Taylor defeated 🇺🇸 Stan Smith / 🇺🇸 Erik van Dillen, 6–7, 6–3, 7–6, 4–6, [5-3]
 * • It was Newcombe's 12th career Grand Slam doubles title, his 6th during the Open Era and his 2nd US Open and 1st of the open era.
 * • It was Taylor's 1st career Grand Slam doubles title.

Women's doubles
🇺🇸 Rosemary Casals / 🇦🇺 Judy Tegart Dalton defeated 🇫🇷 Gail Chanfreau / 🇫🇷 Françoise Dürr, 6–3, 6–3
 * • It was Casals' 6th career Grand Slam doubles title, her 4th during the Open Era and her 2nd at the US Open.
 * • It was Tegart Dalton's 8th and last career Grand Slam doubles title, her 5th during the Open Era and her 2nd at the US Open.

Mixed doubles
🇺🇸 Billie Jean King / 🇦🇺 Owen Davidson defeated Betty Stöve /  Robert Maud, 6–3, 7–5

Men's singles

 * 1) 🇦🇺 John Newcombe (first round, lost to Jan Kodeš)
 * 2) 🇺🇸 Stanley Smith (champion)
 * 3) 🇺🇸 Arthur Ashe (semifinals, lost to Jan Kodeš)
 * 4) Tom Okker (semifinals, lost to Stanley Smith)
 * 5) 🇺🇸 Marty Riessen (quarterfinals, lost to Stanley Smith)
 * 6) 🇺🇸 Cliff Richey (third round, lost to Jim Osborne)
 * 7) 🇺🇸 Clark Graebner (quarterfinals, lost to Tom Okker)
 * 8) 🇷🇴 Ilie Năstase (third round, lost to Bob Carmichael)