Head to head
1
Hard
1
1
Clay
1
0
Grass
1
2
Carpet
2
Pierre Barthes's wins on the left · Ilie Nastase's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 1974 | Davis Cup EUR SF: ROU vs FRA | Clay | RR | Ilie Nastase | 6-2 6-2 6-3 |
| 1974 | Miami WCT | Carpet | R16 | Ilie Nastase | 7-6(6) 6-2 |
| 1974 | Salisbury | Carpet | R16 | Pierre Barthes | 6-3 0-6 6-4 |
| 1972 | Stockholm | Hard | R16 | Ilie Nastase | 7-5 6-1 |
| 1972 | Los Angeles-1 | Hard | QF | Pierre Barthes | 2-6 6-4 6-4 |
| 1972 | Baltimore | Carpet | SF | Ilie Nastase | 6-3 6-2 |
| 1971 | Masters | Hard | RR | Ilie Nastase | W/O |
| 1971 | Palermo | Clay | QF | Pierre Barthes | 7-6 7-6 |
| 1969 | Paris | Carpet | R16 | Pierre Barthes | 9-7 4-6 6-3 |
| 1969 | Wimbledon | Grass | R64 | Ilie Nastase | 6-2 6-4 3-6 6-3 |
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.