Head to head
0
Clay
1
0
Grass
2
1
Carpet
0
Frank Froehling's wins on the left · Clark Graebner's on the right · bar lengths share one scale
All meetings (4)
| 1973 | Salisbury | Carpet | R16 | Frank Froehling | 7-6 6-4 |
| 1971 | South Orange | Grass | R16 | Clark Graebner | 6-2 7-5 |
| 1971 | Haverford | Grass | SF | Clark Graebner | 6-7 6-7 7-6 7-6 6-3 |
| 1971 | Houston | Clay | QF | Clark Graebner | 6-2 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.