1971 U.S. Professional Indoor
| 1971 U.S. Professional Indoor | |
|---|---|
| Date | February 9 – 14 |
| Edition | 4th |
| Category |
World Championship Tennis (men) Virginia Slims Circuit (women) |
| Draw | 32S (men) 16S (women) |
| Prize money | $50,000 (men) $12,500 (women) |
| Surface | Carpet / indoor |
| Location | Philadelphia, PA, United States |
| Venue | Wachovia Spectrum |
| Attendance | 50,199 |
| Champions | |
| Men's Singles | |
 John Newcombe |
|
| Women's Singles | |
 Rosie Casals
|
|
The 1971 U.S. Professional Indoor was a WCT and Virginia Slims Circuit tennis tournament played on indoor carpet courts. It was played at the Wachovia Spectrum in Philadelphia, Pennsylvania in the United States. It was the fourth edition of the tournament and was held from February 9 through February 14, 1971. John Newcombe and Rosie Casals won the singles titles.
John Newcombe defeated Rod Laver 7–6(7–5), 7–6(7–1), 6–4
Rosie Casals defeated 
Françoise Dürr 6–2, 3–6, 6–2
...
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