Washington 1978 WTA
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Sue Barker | d. | Chris Oneil | 6-1 6-3 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Sue Barker | d. | Patricia Coleman | 6-0 6-2 |
| Chris Oneil | d. | Elly Appel | 6-3 6-3 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Sue Barker | d. | Debbie Freeman | 6-3 6-1 |
| Patricia Coleman | d. | Leanne Harrison Austin | 7-5 6-4 |
| Chris Oneil | d. | Keryn Pratt | 6-1 6-1 |
| Elly Appel | d. | Carol Draper | 6-1 6-1 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0