Head to head
1
Clay
0
1
Grass
0
John Whitlinger's wins on the left · Roy Barth's on the right · bar lengths share one scale
All meetings (2)
| 1974 | Haverford | Grass | R32 | John Whitlinger | 7-6 6-3 |
| 1973 | Louisville | Clay | R64 | John Whitlinger | 6-3 7-5 |
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.