Head to head
0
Hard
1
4
Carpet
2
John McEnroe's wins on the left · Jakob Hlasek's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1991 | Basel | Hard | F | Jakob Hlasek | 7-6(4) 6-0 6-3 |
| 1990 | Paris Masters | Carpet | R32 | Jakob Hlasek | 3-6 6-3 7-6 |
| 1989 | Lyon | Carpet | F | John McEnroe | 6-3 7-6 |
| 1988 | Paris | Carpet | QF | Jakob Hlasek | 7-6 2-6 7-6 |
| 1987 | Brussels | Carpet | QF | John McEnroe | 6-3 7-5 |
| 1987 | Philadelphia | Carpet | QF | John McEnroe | 6-2 6-3 |
| 1985 | Milan | Carpet | SF | John McEnroe | 6-3 6-2 |
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.