Head to head
1
Clay
0
1
Grass
0
1
Carpet
0
John McEnroe's wins on the left · Florin Segarceanu's on the right · bar lengths share one scale
All meetings (3)
| 1985 | Roland Garros | Clay | R64 | John McEnroe | 6-2 6-4 6-4 |
| 1984 | Davis Cup WG R1: ROU vs USA | Carpet | RR | John McEnroe | 2-6 6-2 6-2 |
| 1983 | Wimbledon | Grass | R64 | John McEnroe | 4-6 6-2 6-3 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.