Head to head
0
Hard
1
1
Clay
1
1
Carpet
0
Tom Okker's wins on the left · Buster C. Mottram's on the right · bar lengths share one scale
All meetings (4)
| 1980 | Hilversum | Clay | QF | Buster C. Mottram | 7-5 6-3 |
| 1978 | Hilversum | Clay | QF | Tom Okker | 7-6 7-5 |
| 1975 | Johannesburg WCT | Hard | F | Buster C. Mottram | 6-4 6-2 |
| 1975 | Bologna WCT | Carpet | R32 | Tom Okker | 6-7(4) 6-1 6-2 |
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.