Head to head
0
Clay
1
0
Grass
1
1
Carpet
0
Paul Gerken's wins on the left · Clark Graebner's on the right · bar lengths share one scale
All meetings (3)
| 1973 | Hampton | Carpet | QF | Paul Gerken | 6-4 6-7(0) 6-4 |
| 1971 | Houston | Clay | R16 | Clark Graebner | 7-5 6-3 |
| 1969 | South Orange | Grass | R16 | Clark Graebner | 8-6 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.