Davis Cup · 1970-04-10 · draw of 4
Davis Cup WG SF: JPN vs VIE 1970
Round robin
| 🇯🇵 Isao Kobayashi | d. | Van-Thanh Vo | 6-4 8-6 6-3 | H2H |
| 🇯🇵 Koji Watanabe | d. | Van-Bay Vo | 6-2 6-3 6-4 | H2H |
| 🇯🇵 Isao Kobayashi | d. | Van-Bay Vo | 6-4 6-4 9-11 6-2 | H2H |
| 🇯🇵 Koji Watanabe | d. | Van-Thanh Vo | 6-3 6-3 6-1 | H2H |