# 1970 Pacific Southwest Open – Men's singles

The 1970 Pacific Southwest Open – Men's singles was an event of the 1970 Pacific Southwest Open tennis tournament and was played on outdoor hard courts at the Los Angeles Tennis Center in Los Angeles, California, in the United States between September 21 and September 27, 1970. Pancho Gonzales was the defending Pacific Southwest Open champion but was defeated in the quarterfinals. First-seeded Rod Laver won the title by defeating second-seeded John Newcombe 4–6, 6–4, 7–6$^{(7–5)}$ in the final.

## Seeds

    01. Rod Laver (champion)
    02. John Newcombe (final)
    03. Tony Roche (third round)
    04. Roy Emerson (first round)
    05. Pancho Gonzales (quarterfinals)
    06. Cliff Richey (second round)
    07. Arthur Ashe (semifinals)
    08. Andrés Gimeno (third round)
    09. Dennis Ralston (second round)
    10. Roger Taylor (third round)
    11. Tom Okker (second round)
    12. Stan Smith (quarterfinals)
    13. Fred Stolle (third round)
    14. Clark Graebner (quarterfinals)
    15. Nikola Pilić (third round)
    16. Marty Riessen (quarterfinals)
Click on the seed number of a player to go to their draw section.

## 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 2 | John Newcombe | 6 | 6 | 6 | | | | | | | | | |
| 5 | Pancho Gonzales | 7 | 3 | 2 | | | | | | | | | |
| 5 | Pancho Gonzales | 7 | 3 | 2 | 2 | John Newcombe | 7 | 7 | | | | | |
| | | | | | | Tom Gorman | 6 | 6 | | | | | |
| 16 | Marty Riessen | 2 | 4 | | | Tom Gorman | 6 | 6 | | | | | |
| | Tom Gorman | 6 | 6 | | | | | | | | | | |
| | Tom Gorman | 6 | 6 | | | | | | 2 | John Newcombe | 6 | 4 | 6 |
| | | | | | | | | | 1 | Rod Laver | 4 | 6 | 7 |
| 7 | Arthur Ashe | 7 | 6 | | | | | | | | | | | 1 | Rod Laver | 4 | 6 | 7 |
| 14 | Clark Graebner | 5 | 0 | | | | | | | | | | |
| 14 | Clark Graebner | 5 | 0 | | 7 | Arthur Ashe | 0 | 3 | | | | | |
| | | | | | 1 | Rod Laver | 6 | 6 | | | | | |
| 12 | Stan Smith | 3 | 6 | 1 | 1 | Rod Laver | 6 | 6 | | | | | |
| 1 | Rod Laver | 6 | 4 | 6 | | | | | | | | | |

### Top half
#### Section 1

| First Round | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 2 | John Newcombe | 6 | 6 | | | | | | | | | | | | | | | | |
| | Ken Stuart | 3 | 3 | | 2 | John Newcombe | 6 | 6 | | | | | | | | | | | |
| | Ray Ruffels | 6 | 6 | 6 | | Ronald Holmberg | 4 | 4 | | | | | | | | | | | |
| | Ronald Holmberg | 7 | 3 | 7 | | | | | | 2 | John Newcombe | 5 | 6 | 6 | | | | | |
| 13 | Fred Stolle | 7 | 6 | | | | | | | 13 | Fred Stolle | 7 | 3 | 3 | | | | | |
| | Patricio Cornejo | 6 | 2 | | 13 | Fred Stolle | 6 | 6 | | | | | | | | | | | |
| LL | Raúl Ramírez | 6 | 6 | | LL | Raúl Ramírez | 4 | 4 | | | | | | | | | | | |
| Q | David Borelli | 1 | 0 | | | | | | | | | | | | 2 | John Newcombe | 6 | 6 | 6 |
| 5 | Pancho Gonzales | 7 | 6 | | | | | | | | | | | | 5 | Pancho Gonzales | 7 | 3 | 2 |
| Q | Mike Machette | 5 | 4 | | 5 | Pancho Gonzales | 7 | 3 | 7 | | | | | | | | | | |
| | Dick Crealy | 6 | 3 | 7 | | Dick Crealy | 6 | 6 | 6 | | | | | | | | | | |
| | Jim Osborne | 4 | 6 | 6 | | | | | | 5 | Pancho Gonzales | 3 | 6 | 6 | | | | | |
| 10 | Roger Taylor | 6 | 7 | | | | | | | 10 | Roger Taylor | 6 | 3 | 3 | | | | | |
| | Roy Barth | 3 | 6 | | 10 | Roger Taylor | 6 | 6 | 6 | | | | | | | | | | |
| | Mark Cox | 6 | 6 | 2 | | Erik van Dillen | 2 | 7 | 4 | | | | | | | | | | |
| | Erik van Dillen | 2 | 7 | 6 | | | | | | | | | | | | | | | |

#### Section 2

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 3 | Tony Roche | 6 | 6 | | | | | | | | | | | | | | |
| Q | Dave Ranney | 1 | 3 | 3 | Tony Roche | 6 | 7 | 6 | | | | | | | | | |
| | Brian Fairlie | 4 | 6 | Q | Tom Leonard | 7 | 6 | 3 | | | | | | | | | |
| Q | Tom Leonard | 6 | 7 | | | | | | 3 | Tony Roche | 6 | 2 | 3 | | | | |
| 16 | Marty Riessen | 6 | 6 | | | | | | 16 | Marty Riessen | 2 | 6 | 6 | | | | |
| Q | William Brown | 2 | 2 | 16 | Marty Riessen | 6 | 6 | 6 | | | | | | | | | |
| | Ismail El Shafei | 6 | 6 | | Ismail El Shafei | 3 | 7 | 3 | | | | | | | | | |
| | John Cooper | 1 | 1 | | | | | | | | | | | 16 | Marty Riessen | 2 | 4 |
| 8 | Andrés Gimeno | 6 | 6 | | | | | | | | | | | | Tom Gorman | 6 | 6 |
| | Owen Davidson | 3 | 3 | 8 | Andrés Gimeno | 6 | 5 | 7 | | | | | | | | | |
| | Jaime Fillol | 6 | 6 | | Jaime Fillol | 3 | 7 | 5 | | | | | | | | | |
| | Graham Stilwell | 1 | 4 | | | | | | 8 | Andrés Gimeno | 3 | 6 | 4 | | | | |
| 11 | Tom Okker | 7 | 7 | | | | | | | Tom Gorman | 6 | 4 | 6 | | | | |
| Q | Vladimir Petrović | 6 | 5 | 11 | Tom Okker | 5 | 6 | 4 | | | | | | | | | |
| | Tom Gorman | 6 | 6 | | Tom Gorman | 7 | 0 | 6 | | | | | | | | | |
| | Frew McMillan | 4 | 4 | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| First Round | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | Frank Froehling | 3 | 5 | | | | | | | | | | | | | | | |
| | Jan Kodeš | 6 | 7 | | | Jan Kodeš | 7 | 6 | | | | | | | | | | |
| | Richard Russell | 6 | 2 | | 9 | Dennis Ralston | 6 | 3 | | | | | | | | | | |
| 9 | Dennis Ralston | 7 | 6 | | | | | | | | Jan Kodeš | 6 | 5 | 3 | | | | |
| | Lenny Schloss | 2 | 1 | | | | | | | 7 | Arthur Ashe | 2 | 7 | 6 | | | | |
| | Bob Lutz | 6 | 6 | | | Bob Lutz | 2 | 1 | | | | | | | | | | |
| | Pancho Segura | 4 | 6 | | 7 | Arthur Ashe | 6 | 6 | | | | | | | | | | |
| 7 | Arthur Ashe | 6 | 7 | | | | | | | | | | | | 7 | Arthur Ashe | 7 | 6 |
| | Joaquín Loyo-Mayo | 6 | 3 | 6 | | | | | | | | | | | 14 | Clark Graebner | 5 | 0 |
| | Bob Hewitt | 2 | 6 | 2 | | Joaquín Loyo-Mayo | 1 | 3 | | | | | | | | | | |
| | Ray Keldie | 6 | 4 | 2 | 14 | Clark Graebner | 6 | 6 | | | | | | | | | | |
| 14 | Clark Graebner | 3 | 6 | 6 | | | | | | 14 | Clark Graebner | 6 | 2 | 6 | | | | |
| | Marcello Lara | 5 | 5 | | | | | | | Q | Jimmy Connors | 3 | 6 | 3 | | | | |
| | Ray Moore | 7 | 7 | | | Ray Moore | 1 | 7 | 4 | | | | | | | | | |
| Q | Jimmy Connors | 7 | 6 | 6 | Q | Jimmy Connors | 6 | 6 | 6 | | | | | | | | | |
| 4 | Roy Emerson | 6 | 7 | 4 | | | | | | | | | | | | | | |

#### Section 4

| First Round | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | Torben Ulrich | 2 | 4 | | | | | | | | | | | | | | | | |
| | Charlie Pasarell | 6 | 6 | | | Charlie Pasarell | 4 | 2 | | | | | | | | | | | |
| | Allan Stone | 1 | 6 | | 12 | Stan Smith | 6 | 6 | | | | | | | | | | | |
| 12 | Stan Smith | 6 | 7 | | | | | | | 12 | Stan Smith | 6 | 6 | | | | | | |
| | Haroon Rahim | 4 | 6 | 3 | | | | | | | Thomaz Koch | 3 | 4 | | | | | | |
| | Thomaz Koch | 6 | 3 | 6 | | Thomaz Koch | 6 | 6 | | | | | | | | | | | |
| | Terry Addison | 3 | 3 | | 6 | Cliff Richey | 3 | 2 | | | | | | | | | | | |
| 6 | Cliff Richey | 6 | 6 | | | | | | | | | | | | 12 | Stan Smith | 3 | 6 | 1 |
| | Alex Olmedo | 6 | 2 | | | | | | | | | | | | 1 | Rod Laver | 6 | 4 | 6 |
| | Bob Carmichael | 7 | 6 | | | Bob Carmichael | 6 | 6 | 4 | | | | | | | | | | |
| | Tom Edlefsen | 4 | 3 | | 15 | Nikola Pilić | 4 | 7 | 6 | | | | | | | | | | |
| 15 | Nikola Pilić | 6 | 6 | | | | | | | 15 | Nikola Pilić | 5 | 7 | 4 | | | | | |
| | Allen Fox | 6 | 7 | | | | | | | 1 | Rod Laver | 7 | 6 | 6 | | | | | |
| | Jim McManus | 3 | 6 | | | Allen Fox | 3 | 1 | | | | | | | | | | | |
| Q | Dick Knight | 4 | 3 | | 1 | Rod Laver | 6 | 6 | | | | | | | | | | | |
| 1 | Rod Laver | 6 | 6 | | | | | | | | | | | | | | | | |