Head to head
2
Hard
1
0
Grass
1
3
Carpet
0
Johan Kriek's wins on the left · John Sadri's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1986 | US Open | Hard | R64 | Johan Kriek | 6-3 6-3 6-4 |
| 1986 | Wimbledon | Grass | R64 | John Sadri | 2-6 6-3 7-6 6-3 |
| 1985 | Las Vegas | Hard | R32 | Johan Kriek | 7-5 6-1 |
| 1982 | Munich WCT | Carpet | R32 | Johan Kriek | 6-3 6-1 |
| 1980 | San Francisco | Carpet | R16 | Johan Kriek | 7-6 5-7 7-5 |
| 1980 | Cincinnati | Hard | R32 | John Sadri | 6-3 3-6 6-1 |
| 1980 | WCT Finals | Carpet | QF | Johan Kriek | 7-5 6-4 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.