# 1971 U.S. Pro Tennis Championships – Singles

The 1971 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor hard courts at the Longwood Cricket Club in Boston, USA and was part of the 1971 World Championship Tennis circuit. It was the 44th edition of the tournament and was held from August 2 through August 8, 1971. Tony Roche was the defending champion but did not participate in this edition. Sixth-seeded Ken Rosewall won the singles title, his third U.S. Pro title, and the accompanying $10,000 first-prize money. The final was watched by 5,500 spectators.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
* John Newcombe (semifinals)
* Arthur Ashe (quarterfinals)
* Cliff Drysdale (final)
* Rod Laver (quarterfinals)
* Tom Okker (quarterfinals)
* Ken Rosewall (champion)
* Marty Riessen (semifinals)
* Roy Emerson (second round)
* Andrés Gimeno (second round)
* Bob Maud (first round)
* John Alexander (quarterfinals)
* Bob Lutz (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 6 | Ken Rosewall | 3 | 6 | 6 | 6 | | | | | | |
| 7 | Marty Riessen | 6 | 1 | 4 | 3 | | | | | | |
| 7 | Marty Riessen | 6 | 1 | 4 | 3 | | 6 | Ken Rosewall | 6 | 6 | 6 |
| | | | | | | | 3 | Cliff Drysdale | 4 | 3 | 0 |
| 3 | Cliff Drysdale | 6 | 1 | 5 | 7 | 6 | 3 | Cliff Drysdale | 4 | 3 | 0 |
| 1 | John Newcombe | 3 | 6 | 7 | 5 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 2 | A Ashe | 6 | 6 | | | | | | | | | | | | | | | | |
| | N Pilić | 4 | 3 | 2 | A Ashe | 6 | 6 | | | | | | | | | | | | |
| | C Pasarell | 6 | 6 | | C Pasarell | 4 | 0 | | | | | | | | | | | | |
| | W Bowrey | 0 | 3 | | | | | | 2 | A Ashe | 3 | 4 | | | | | | | |
| 9 | A Gimeno | 6 | 6 | | | | | | 6 | K Rosewall | 6 | 6 | | | | | | | |
| | T Ulrich | 1 | 1 | 9 | A Gimeno | 6 | 4 | | | | | | | | | | | | |
| 6 | K Rosewall | 6 | 6 | 6 | K Rosewall | 7 | 6 | | | | | | | | | | | | |
| | M Cox | 3 | 3 | | | | | | | | | | | 6 | K Rosewall | 3 | 6 | 6 | 6 |
| 7 | M Riessen | 6 | 6 | | | | | | | | | | | 7 | M Riessen | 6 | 1 | 4 | 3 |
| | T Leonard | 4 | 3 | 7 | M Riessen | 6 | 6 | | | | | | | | | | | | |
| 12 | B Lutz | 6 | 6 | 12 | B Lutz | 2 | 3 | | | | | | | | | | | | |
| | F Stolle | 3 | 4 | | | | | | 7 | M Riessen | 1 | 6 | 7 | | | | | | |
| | I El Shafei | 6 | 6 | | | | | | 4 | R Laver | 6 | 4 | 6 | | | | | | |
| | R Holmberg | 3 | 2 | | I El Shafei | 6 | 2 | 2 | | | | | | | | | | | |
| 4 | R Laver | 6 | 6 | 4 | R Laver | 4 | 6 | 6 | | | | | | | | | | | |
| | D Crealy | 1 | 1 | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 3 | C Drysdale | 6 | 7 | | | | | | | | | | | | | | | | | | |
| | R Ruffels | 1 | 6 | | 3 | C Drysdale | 7 | 7 | | | | | | | | | | | | | |
| | R Taylor | 6 | 6 | | | R Taylor | 5 | 5 | | | | | | | | | | | | | |
| | R Barth | 2 | 2 | | | | | | | 3 | C Drysdale | 6 | 4 | 6 | | | | | | | |
| | A Stone | 6 | 7 | | | | | | | 5 | T Okker | 4 | 6 | 4 | | | | | | | |
| 10 | B Maud | 1 | 6 | | | A Stone | 4 | 1 | | | | | | | | | | | | | |
| 5 | T Okker | 3 | 7 | 6 | 5 | T Okker | 6 | 6 | | | | | | | | | | | | | |
| | B Fairlie | 6 | 6 | 1 | | | | | | | | | | | 3 | C Drysdale | 6 | 1 | 5 | 7 | 6 |
| 8 | R Emerson | 6 | 6 | | | | | | | | | | | | 1 | J Newcombe | 3 | 6 | 7 | 5 | 4 |
| | B Carmichael | 0 | 3 | | 8 | R Emerson | 3 | 6 | | | | | | | | | | | | | |
| 11 | J Alexander | 6 | 7 | | 11 | J Alexander | 6 | 7 | | | | | | | | | | | | | |
| | G Stilwell | 1 | 6 | | | | | | | 11 | J Alexander | 5 | 4 | | | | | | | | |
| | P Dent | 6 | 6 | | | | | | | 1 | J Newcombe | 7 | 6 | | | | | | | | |
| | O Davidson | 4 | 2 | | | P Dent | 6 | 2 | 1 | | | | | | | | | | | | |
| | F McMillan | 3 | 2 | | 1 | J Newcombe | 4 | 6 | 6 | | | | | | | | | | | | |
| 1 | J Newcombe | 6 | 6 | | | | | | | | | | | | | | | | | | |