Head to head
1
Clay
1
1
Carpet
0
Ion Tiriac's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (3)
| 1971 | Davis Cup EUR F: BRA vs ROU | Clay | RR | Thomaz Koch | 4-6 6-4 6-3 9-7 |
| 1971 | Hampton | Carpet | QF | Ion Tiriac | 7-5 6-7 6-1 |
| 1968 | Bastad-1 | Clay | R16 | Ion Tiriac | 6-4 4-6 6-2 6-1 |
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.