Head to head
0
Hard
1
0
Clay
1
0
Grass
1
1
Carpet
0
John Whitlinger's wins on the left · Jim Delaney's on the right · bar lengths share one scale
All meetings (4)
| 1977 | Taipei | Carpet | R16 | John Whitlinger | 6-4 2-6 7-5 |
| 1977 | Hong Kong | Hard | R32 | Jim Delaney | 3-6 6-3 6-2 |
| 1976 | Brisbane | Grass | R32 | Jim Delaney | 7-6 3-6 6-1 |
| 1976 | Columbus-2 | Clay | R32 | Jim Delaney | 7-6 3-6 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.