Head to head
5
Hard
5
3
Clay
2
2
Grass
1
0
Carpet
3
Ilie Nastase's wins on the left · Stan Smith's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (21)
| 1982 | Gstaad | Clay | R32 | Ilie Nastase | 6-1 2-6 6-0 |
| 1981 | Las Vegas | Hard | R32 | Stan Smith | 7-6 6-1 |
| 1979 | Cleveland | Hard | F | Stan Smith | 7-6 7-5 |
| 1976 | Nottingham | Grass | R16 | Ilie Nastase | 6-4 6-3 |
| 1974 | Rome | Clay | SF | Ilie Nastase | 6-2 6-2 6-4 |
| 1973 | Paris | Hard | F | Ilie Nastase | 4-6 6-1 3-6 6-0 6-2 |
| 1973 | Davis Cup WG SF: USA vs ROU | Hard | RR | Stan Smith | 5-7 6-2 6-3 4-6 6-3 |
| 1972 | Masters | Hard | F | Ilie Nastase | 6-3 6-2 3-6 2-6 6-3 |
| 1972 | Davis Cup WG F: ROU vs USA | Clay | RR | Stan Smith | 11-9 6-2 6-3 |
| 1972 | Wimbledon | Grass | F | Stan Smith | 4-6 6-3 6-3 4-6 7-5 |
| 1972 | Hampton | Carpet | F | Stan Smith | 6-3 6-2 6-7 6-4 |
| 1972 | Salisbury | Carpet | F | Stan Smith | 5-7 6-2 6-3 6-4 |
| 1971 | Masters | Hard | F | Ilie Nastase | 5-7 7-6 6-3 |
| 1971 | Davis Cup WG CR: USA vs ROU | Clay | RR | Stan Smith | 7-5 6-3 6-1 |
| 1971 | Roland Garros | Clay | QF | Ilie Nastase | 6-1 6-3 3-6 6-4 |
| 1970 | New York | Carpet | RR | Stan Smith | 6-5 |
| 1969 | Stockholm | Hard | SF | Ilie Nastase | 6-4 3-6 6-3 |
| 1969 | Denver | Hard | F | Ilie Nastase | 6-4 6-5 |
| 1969 | Denver | Hard | RR | Stan Smith | 6-2 |
| 1969 | Davis Cup WG CR: USA vs ROU | Hard | RR | Stan Smith | 4-6 4-6 6-4 6-1 11-9 |
| 1969 | US Open | Grass | R64 | Ilie Nastase | 5-7 12-10 7-5 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.