Head to head
Rivalry summary
Jim Osborne and Thomaz Koch met 6 times on the ATP tour between 1969 and 1973. Thomaz Koch leads the head-to-head 4–2 against Jim Osborne. By surface, Koch leads 2–1 on hard; they are level 1–1 on grass.
1
Hard
2
1
Grass
1
0
Carpet
1
Jim Osborne's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1973 | San Juan | Hard | RR | Thomaz Koch | 7-6 6-3 |
| 1972 | South Orange | Grass | R16 | Thomaz Koch | 7-6 6-3 |
| 1971 | US Open | Grass | R64 | Jim Osborne | 6-3 1-6 6-4 6-3 |
| 1971 | Omaha | Carpet | R16 | Thomaz Koch | 6-2 6-4 |
| 1970 | Omaha | Hard | SF | Jim Osborne | 8-6 6-2 |
| 1969 | Berkeley | Hard | R16 | Thomaz Koch | 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.