Head to head
2
Hard
0
1
Grass
1
Pierre Barthes's wins on the left · Clark Graebner's on the right · bar lengths share one scale
All meetings (4)
| 1972 | Los Angeles-1 | Hard | R16 | Pierre Barthes | 7-6 6-2 |
| 1971 | Masters | Hard | RR | Pierre Barthes | 6-1 7-6 |
| 1971 | South Orange | Grass | F | Clark Graebner | 6-3 6-4 6-4 |
| 1969 | Bristol | Grass | SF | Pierre Barthes | 10-8 6-4 |
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.