Head to head
2
Hard
2
1
Clay
2
Andrew Pattison's wins on the left · Tom Okker's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1978 | US Open | Hard | R128 | Andrew Pattison | 7-6 4-6 6-3 |
| 1975 | San Juan WCT | Clay | R16 | Andrew Pattison | 7-5 6-7 7-5 |
| 1974 | Tucson | Hard | R32 | Tom Okker | 7-6 6-3 |
| 1972 | Stockholm | Hard | QF | Tom Okker | 6-3 6-2 |
| 1970 | Hilversum | Clay | R16 | Tom Okker | 6-2 7-5 |
| 1970 | Bournemouth | Clay | R32 | Tom Okker | 6-1 6-2 2-6 6-3 |
| 1970 | Durban | Hard | R16 | Andrew Pattison | 6-4 1-0 RET |
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.