Head to head
1
Hard
1
1
Grass
2
3
Carpet
5
Ilie Nastase's wins on the left · Clark Graebner's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (13)
| 1973 | Charleston | Carpet | SF | Clark Graebner | 6-7 6-3 6-4 |
| 1973 | Paramus | Hard | SF | Clark Graebner | 6-1 7-5 |
| 1972 | London-3 | Carpet | R16 | Ilie Nastase | 6-2 6-4 |
| 1972 | Wimbledon | Grass | R64 | Ilie Nastase | 6-3 4-6 6-1 6-2 |
| 1972 | London-1 | Carpet | SF | Clark Graebner | 6-3 RET |
| 1971 | Masters | Hard | RR | Ilie Nastase | 6-3 6-2 |
| 1971 | Hampton | Carpet | F | Ilie Nastase | 7-5 6-4 7-6 |
| 1971 | Salisbury | Carpet | SF | Clark Graebner | 2-6 1-6 6-4 6-2 6-2 |
| 1971 | New York | Carpet | SF | Clark Graebner | 7-6 7-6 |
| 1970 | Wimbledon | Grass | R16 | Clark Graebner | 6-3 6-0 4-6 6-3 |
| 1970 | Hampton | Carpet | QF | Clark Graebner | 8-6 7-5 |
| 1970 | New York | Carpet | RR | Ilie Nastase | 6-4 |
| 1969 | Wimbledon | Grass | R32 | Clark Graebner | 7-5 8-6 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.