Head to head
1
Hard
1
0
Grass
1
Jim Grabb's wins on the left · John McEnroe's on the right · bar lengths share one scale
All meetings (3)
| 1992 | Canada Masters | Hard | R32 | John McEnroe | 6-1 6-1 |
| 1992 | Rosmalen | Grass | R16 | John McEnroe | 6-2 7-6(7) |
| 1991 | Indian Wells Masters | Hard | R32 | Jim Grabb | 7-6(7) 7-5 |
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.