Head to head
Rivalry summary
Koji Watanabe and Van-Thanh Vo met 1 times on the ATP tour between 1970 and 1970. Koji Watanabe leads the head-to-head 1–0 against Van-Thanh Vo.
All meetings (1)
| 1970 | Davis Cup WG SF: JPN vs VIE | RR | Koji Watanabe | 6-3 6-3 6-1 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.