Head to head
2
Hard
1
1
Clay
3
2
Grass
3
0
Carpet
3
Nikola Pilic'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 (15)
| 1975 | Wimbledon | Grass | R128 | Tom Okker | 6-3 8-6 6-3 |
| 1972 | Boston WCT | Hard | QF | Tom Okker | 6-7 7-6 6-4 |
| 1972 | St. Louis WCT | Hard | QF | Nikola Pilic | 7-6 7-6 |
| 1972 | Toronto WCT | Carpet | R32 | Tom Okker | 6-4 6-7 7-6 |
| 1971 | Vancouver WCT | Carpet | QF | Tom Okker | 7-6 7-6 |
| 1971 | Midland | Hard | SF | Nikola Pilic | 7-6 6-3 |
| 1971 | Quebec WCT | Carpet | R16 | Tom Okker | 7-5 6-4 |
| 1971 | Louisville WCT | Clay | SF | Tom Okker | 3-6 6-4 6-2 |
| 1971 | Wimbledon | Grass | R32 | Tom Okker | 3-6 6-3 6-4 8-6 |
| 1970 | Gstaad | Clay | QF | Tom Okker | 6-4 6-4 |
| 1970 | Bristol | Grass | R32 | Nikola Pilic | 3-6 16-14 10-8 |
| 1970 | Bournemouth | Clay | QF | Nikola Pilic | 6-2 6-3 7-5 |
| 1970 | Australian Round Robin | Grass | RR | Nikola Pilic | 6-3 6-4 |
| 1969 | Hollywood | Clay | R16 | Tom Okker | 9-7 6-3 |
| 1968 | Queen's Club | Grass | R16 | Tom Okker | 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.