Head to head
0
Hard
2
1
Clay
2
Nicola Spear's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (5)
| 1975 | Toronto-2 | Clay | R64 | Thomaz Koch | 7-5 6-2 |
| 1975 | Roland Garros | Clay | R128 | Nicola Spear | 7-6 5-7 7-5 |
| 1971 | Caracas | Hard | R16 | Thomaz Koch | 6-1 6-2 |
| 1969 | Houston | Clay | R16 | Thomaz Koch | 6-3 6-4 |
| 1969 | Kingston | Hard | QF | Thomaz Koch | 6-2 7-9 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.