# 1970 U.S. Pro Tennis Championships – Singles

The 1970 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor hard courts at the Longwood Cricket Club in Boston, USA. It was classified as a Glass 1 category tournament and was part of the 1970 Grand Prix circuit. It was the 43rd edition of the tournament and was held from August 3 through August 9, 1970. Fourth-seeded Tony Roche won the singles title and the accompanying $12,000 first prize money.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
* Rod Laver (final)
* Tony Roche (champion)
* John Newcombe (first round)
* Ken Rosewall (second round)
* Cliff Richey (first round)
* Roy Emerson (semifinals)
* Arthur Ashe (quarterfinals)
* Andrés Gimeno (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 | Final | Final | Final | Final | Final | Final |
| 2 | Tony Roche | 2 | 6 | 6 | 6 | | | | | | |
| 6 | Roy Emerson | 6 | 1 | 4 | 3 | | | | | | |
| 6 | Roy Emerson | 6 | 1 | 4 | 3 | 2 | Tony Roche | 3 | 6 | 6 | 6 |
| | | | | | | 1 | Rod Laver | 6 | 4 | 2 | 2 |
| | Cliff Drysdale | 3 | 0 | 0 | | 1 | Rod Laver | 6 | 4 | 2 | 2 |
| 1 | Rod Laver | 6 | 6 | 6 | | | | | | | |

### Top 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 2 | T Roche | 6 | 6 | | | | | | | | | | | | | | | | |
| | D Ralston | 4 | 1 | | 2 | T Roche | 7 | 6 | 6 | | | | | | | | | | |
| | F Stolle | 6 | 7 | | | F Stolle | 6 | 7 | 1 | | | | | | | | | | |
| | P Cornejo | 2 | 6 | | | | | | | 2 | T Roche | 6 | 6 | | | | | | |
| 7 | A Ashe | 6 | 6 | | | | | | | 7 | A Ashe | 1 | 4 | | | | | | |
| | P Barthès | 4 | 2 | | 7 | A Ashe | 6 | 6 | | | | | | | | | | | |
| | I El Shafei | 1 | 6 | 7 | | I El Shafei | 3 | 4 | | | | | | | | | | | |
| | T Okker | 6 | 4 | 5 | | | | | | | | | | 2 | T Roche | 2 | 6 | 6 | 6 |
| | C Graebner | 6 | 6 | | | | | | | | | | | 6 | R Emerson | 6 | 1 | 4 | 3 |
| 3 | J Newcombe | 2 | 4 | | | C Graebner | 6 | 5 | 3 | | | | | | | | | | |
| | J Fillol | 7 | 3 | 7 | | Jaime Fillol | 4 | 7 | 6 | | | | | | | | | | |
| | T Gorman | 6 | 6 | 6 | | | | | | | Jaime Fillol | 3 | 2 | | | | | | |
| 6 | R Emerson | 6 | 6 | | | | | | | 6 | R Emerson | 6 | 6 | | | | | | |
| | B Bowrey | 3 | 2 | | 6 | R Emerson | 6 | 6 | | | | | | | | | | | |
| | M Cox | 6 | 6 | 6 | | M Cox | 1 | 2 | | | | | | | | | | | |
| | B Lutz | 3 | 7 | 4 | | | | | | | | | | | | | | | |

### 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 |
| | J Kodeš | 6 | 6 | | | | | | | | | | | | | | | | |
| | G Stilwell | 4 | 1 | | | J Kodeš | 7 | 6 | | | | | | | | | | | |
| | M Riessen | 2 | 6 | 6 | | M Riessen | 5 | 4 | | | | | | | | | | | |
| 5 | C Richey | 6 | 4 | 3 | | | | | | | J Kodeš | 7 | 3 | 4 | | | | | |
| | C Drysdale | 6 | 5 | 7 | | | | | | | C Drysdale | 6 | 6 | 6 | | | | | |
| | Ž Franulović | 2 | 7 | 6 | | C Drysdale | 6 | 7 | | | | | | | | | | | |
| 4 | K Rosewall | 6 | 6 | | 4 | K Rosewall | 4 | 6 | | | | | | | | | | | |
| | R Taylor | 2 | 4 | | | | | | | | | | | | | C Drysdale | 3 | 0 | 0 |
| | R Ruffels | 7 | 6 | | | | | | | | | | | | 1 | R Laver | 6 | 6 | 6 |
| | A Stone | 6 | 4 | | | R Ruffels | 6 | 4 | 6 | | | | | | | | | | |
| 8 | A Gimeno | 6 | 6 | 6 | 8 | Andrés Gimeno | 1 | 6 | 2 | | | | | | | | | | |
| | C Pasarell | 7 | 2 | 0 | | | | | | | R Ruffels | 1 | 2 | | | | | | |
| | R Moore | 6 | 6 | | | | | | | 1 | R Laver | 6 | 6 | | | | | | |
| | R Holmberg | 2 | 3 | | | R Moore | 3 | 5 | | | | | | | | | | | |
| 1 | R Laver | 6 | 6 | | 1 | R Laver | 6 | 7 | | | | | | | | | | | |
| | T Ulrich | 3 | 2 | | | | | | | | | | | | | | | | |