Head to head
0
Hard
1
0
Grass
1
1
Carpet
0
John McEnroe's wins on the left · Erik Van Dillen's on the right · bar lengths share one scale
All meetings (3)
| 1980 | Toronto | Hard | R32 | Erik Van Dillen | 3-4 RET |
| 1978 | Wimbledon | Grass | R128 | Erik Van Dillen | 7-5 1-6 8-9 6-4 6-3 |
| 1978 | San Jose | Carpet | QF | John McEnroe | 6-2 6-1 |
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.