Head to head
1
Hard
1
0
Clay
1
0
Carpet
2
Thomaz Koch's wins on the left · Zeljko Franulovic's on the right · bar lengths share one scale
All meetings (5)
| 1973 | Buenos Aires | Clay | R16 | Zeljko Franulovic | 6-4 6-2 |
| 1973 | Caracas | Hard | RR | Zeljko Franulovic | 6-4 7-5 |
| 1972 | Los Angeles-1 | Hard | R16 | Thomaz Koch | 6-2 5-7 7-6 |
| 1971 | New York | Carpet | SF | Zeljko Franulovic | 6-2 5-7 6-3 |
| 1970 | New York | Carpet | RR | Zeljko Franulovic | 6-3 |
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.