Head to head
Rivalry summary
John Whitlinger and Kenichi Hirai met 1 times on the ATP tour between 1977 and 1977. John Whitlinger leads the head-to-head 1–0 against Kenichi Hirai.
1
Clay
0
John Whitlinger's wins on the left · Kenichi Hirai's on the right · bar lengths share one scale
All meetings (1)
| 1977 | Tokyo | Clay | R64 | John Whitlinger | 6-0 7-6 |
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.