Washington 1978 WTA
Final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Sue Barker | m. | Chris Oneil | 6-1 6-3 |
Semifinal
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Sue Barker | m. | Patricia Coleman | 6-0 6-2 |
| Chris Oneil | m. | Elly Appel | 6-3 6-3 |
Perempat final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Sue Barker | m. | Debbie Freeman | 6-3 6-1 |
| Patricia Coleman | m. | Leanne Harrison Austin | 7-5 6-4 |
| Chris Oneil | m. | Keryn Pratt | 6-1 6-1 |
| Elly Appel | m. | Carol Draper | 6-1 6-1 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0