# 1973 Rainier International Tennis Classic – Singles

The 1973 Rainier International Tennis Classic – Singles was an event of the 1973 Rainier International Tennis Classic tennis tournament played at the Seattle Center Arena in Seattle, Washington, in the United States between September 10 and September 16, 1973. Ilie Năstase was the defending champion, but did not compete in this edition. Second-seeded Tom Okker won the singles title, defeating John Alexander 7–5, 6–4 in the final.

## Seeds

* Arthur Ashe (quarterfinals)
* Tom Okker (champion)
* Tom Gorman (semifinals)
* Cliff Richey (semifinals)
* Mark Cox (quarterfinals)
* Brian Gottfried (quarterfinals)
* Jaime Fillol (first round)
* John Alexander (final)

## 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 | Final | Final | Final | Final |
| 2 | Tom Okker | 6 | 7 | | | | | |
| 3 | Tom Gorman | 3 | 6 | | | | | |
| 3 | Tom Gorman | 3 | 6 | | 2 | Tom Okker | 7 | 6 |
| | | | | | 8 | John Alexander | 5 | 4 |
| 4 | Cliff Richey | 6 | 6 | 6 | 8 | John Alexander | 5 | 4 |
| 8 | John Alexander | 7 | 0 | 7 | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 2 | Tom Okker | 6 | 6 | | | | | | | | | | | | | | | |
| | William Higgins | 4 | 3 | | 2 | Tom Okker | 6 | 6 | | | | | | | | | | |
| | Frew McMillan | 6 | 7 | | | Frew McMillan | 1 | 4 | | | | | | | | | | |
| | William Brown | 3 | 6 | | | | | | | 2 | Tom Okker | 6 | 6 | | | | | |
| 7 | Jaime Fillol | 1 | 6 | 5 | | | | | | | Torben Ulrich | 2 | 2 | | | | | |
| | Robert Kreiss | 6 | 2 | 7 | | Robert Kreiss | 3 | 6 | | | | | | | | | | |
| | Torben Ulrich | 6 | 6 | | | Torben Ulrich | 6 | 7 | | | | | | | | | | |
| | Terry Ryan | 2 | 3 | | | | | | | | | | | | 2 | Tom Okker | 6 | 7 |
| 3 | Tom Gorman | 6 | 6 | | | | | | | | | | | | 3 | Tom Gorman | 3 | 6 |
| | Saeed Meer | 2 | 2 | | 3 | Tom Gorman | 6 | 2 | 6 | | | | | | | | | |
| | Milan Holeček | 3 | 6 | 6 | | Kim Warwick | 0 | 6 | 3 | | | | | | | | | |
| | Kim Warwick | 6 | 2 | 7 | | | | | | 3 | Tom Gorman | 4 | 6 | 6 | | | | |
| 5 | Mark Cox | 6 | 6 | | | | | | | 5 | Mark Cox | 6 | 1 | 4 | | | | |
| | William Lloyd | 2 | 2 | | 5 | Mark Cox | 6 | 6 | | | | | | | | | | |
| | Mike Estep | 6 | 5 | 0$^d$ | | Pat Cramer | 2 | 1 | | | | | | | | | | |
| | Pat Cramer | 4 | 7 | 0 | | | | | | | | | | | | | | |

### 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 |
| | Dick Knight | 6 | 3 | 4 | | | | | | | | | | | | | | | |
| | John Bartlett | 2 | 6 | 6 | | John Bartlett | 4 | 4 | | | | | | | | | | | |
| | Jean-Baptiste Chanfreau | 2 | 6 | | 6 | Brian Gottfried | 6 | 6 | | | | | | | | | | | |
| 6 | Brian Gottfried | 6 | 7 | | | | | | | 6 | Brian Gottfried | 4 | 6 | 2 | | | | | |
| | Robert McKinley | 7 | 7 | | | | | | | 4 | Cliff Richey | 6 | 2 | 6 | | | | | |
| | Brian Teacher | 6 | 6 | | | Robert McKinley | 0 | 4 | | | | | | | | | | | |
| | Steve Faulk | 3 | 1 | | 4 | Cliff Richey | 6 | 6 | | | | | | | | | | | |
| 4 | Cliff Richey | 6 | 6 | | | | | | | | | | | | 4 | Cliff Richey | 6 | 6 | 6 |
| | Bob Carmichael | 6 | 6 | | | | | | | | | | | | 8 | John Alexander | 7 | 0 | 7 |
| | Steve Tidball | 4 | 2 | | | Bob Carmichael | 4 | 7 | 4 | | | | | | | | | | |
| | Gerald Battrick | 6 | 1 | 6 | 8 | John Alexander | 6 | 5 | 6 | | | | | | | | | | |
| 8 | John Alexander | 4 | 6 | 7 | | | | | | 8 | John Alexander | 6 | 6 | | | | | | |
| | Sherwood Stewart | 6 | 6 | | | | | | | 1 | Arthur Ashe | 1 | 2 | | | | | | |
| | Graham Stilwell | 3 | 2 | | | Sherwood Stewart | 4 | 4 | | | | | | | | | | | |
| | Gary Groslimond | 2 | 5 | | 1 | Arthur Ashe | 6 | 6 | | | | | | | | | | | |
| 1 | Arthur Ashe | 6 | 7 | | | | | | | | | | | | | | | | |