Head to head
0
Hard
1
2
Clay
1
2
Carpet
0
Tom Okker's wins on the left · Ion Tiriac's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1973 | London-3 | Carpet | QF | Tom Okker | 7-6 6-4 |
| 1971 | Monte-Carlo | Clay | SF | Tom Okker | 6-4 6-0 4-6 6-0 |
| 1970 | Salisbury | Hard | R16 | Ion Tiriac | 6-3 7-5 |
| 1969 | Paris | Carpet | QF | Tom Okker | 6-2 6-2 |
| 1969 | Rome | Clay | R16 | Tom Okker | 6-1 2-6 6-4 11-9 |
| 1968 | Lugano | Clay | F | Ion Tiriac | 6-8 7-5 6-0 |
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.