Head to head
1
Hard
0
2
Clay
0
1
Grass
0
2
Carpet
0
Tom Okker's wins on the left · Tom Leonard's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1978 | Wimbledon | Grass | R16 | Tom Okker | 6-1 9-8 6-1 |
| 1978 | Houston WCT | Clay | R32 | Tom Okker | 6-1 6-0 |
| 1974 | Tucson | Hard | R64 | Tom Okker | 6-3 6-4 |
| 1972 | Cleveland WCT | Carpet | R32 | Tom Okker | 6-3 6-3 |
| 1972 | Philadelphia WCT | Carpet | R32 | Tom Okker | 6-2 6-4 |
| 1971 | Toronto WCT | Clay | R32 | Tom Okker | 6-4 7-6 |
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.