Head to head
Rivalry summary
Van-Bay Vo and Kenichi Hirai met 1 times on the ATP tour between 1974 and 1974. Kenichi Hirai leads the head-to-head 1–0 against Van-Bay Vo.
All meetings (1)
| 1974 | Davis Cup WG PR: JPN vs VIE | RR | Kenichi Hirai | 6-0 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.