Manhasset 1978 WTA
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Ann Kiyomura Hayashi | d. | Sonoe Yonezawa | 6-4 6-3 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ann Kiyomura Hayashi | d. | Kiyoko Nomura | 6-1 6-1 |
| Sonoe Yonezawa | d. | Kayoko Fukuoka | 6-1 6-2 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ann Kiyomura Hayashi | d. | Naoko Sato | 6-4 6-0 |
| Kiyoko Nomura | d. | Patricia Bostrom | 7-5 6-3 |
| Kayoko Fukuoka | d. | Fumiko Furuhashi | 6-1 6-2 |
| Sonoe Yonezawa | d. | Nancy Weigel | 6-2 6-0 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Ann Kiyomura Hayashi | d. | Kyoko Hatanaka | 6-4 7-5 |
| Naoko Sato | d. | Kym Ruddell | 7-6 6-0 |
| Patricia Bostrom | d. | C Teshima | 6-4 6-3 |
| Kiyoko Nomura | d. | Marcie Louie | 7-5 7-5 |
| Fumiko Furuhashi | d. | Kiyomi Nakagawa | 6-3 7-5 |
| Kayoko Fukuoka | d. | Helle Sparre | 6-2 6-4 |
| Nancy Weigel | d. | Pierrette Seghers | 6-2 6-2 |
| Sonoe Yonezawa | d. | Kumiko Okamoto | 6-1 6-2 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0