Head to head
1
Hard
0
2
Clay
0
Lawson Duncan's wins on the left · Johan Kriek's on the right · bar lengths share one scale
All meetings (3)
| 1989 | US Open | Hard | R128 | Lawson Duncan | 6-7 6-3 6-2 6-1 |
| 1988 | Charleston | Clay | R16 | Lawson Duncan | 7-6 7-6 |
| 1985 | Forest Hills | Clay | R32 | Lawson Duncan | 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.