Head to head
1
Hard
2
0
Carpet
1
John Alexander's wins on the left · Johan Kriek's on the right · bar lengths share one scale
All meetings (4)
| 1981 | Las Vegas | Hard | R32 | John Alexander | 6-3 6-1 |
| 1980 | Melbourne | Hard | R32 | Johan Kriek | 6-0 6-1 |
| 1980 | Sydney-1 | Hard | R32 | Johan Kriek | 6-2 7-5 |
| 1979 | Philadelphia WCT | Carpet | R64 | Johan Kriek | 6-4 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.