Head to head
0
Hard
2
1
Grass
0
0
Carpet
2
Sammy Giammalva Jr.'s wins on the left · Christo Van Rensburg's on the right · bar lengths share one scale
All meetings (5)
| 1989 | Philadelphia | Carpet | R32 | Christo Van Rensburg | 6-3 5-7 7-6 |
| 1988 | Philadelphia | Carpet | QF | Christo Van Rensburg | 7-6 6-2 |
| 1987 | Stratton Mountain | Hard | R32 | Christo Van Rensburg | 7-6 6-4 |
| 1987 | Newport | Grass | SF | Sammy Giammalva Jr. | 6-3 6-1 |
| 1987 | Orlando | Hard | R32 | Christo Van Rensburg | 6-3 6-4 |
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.