Head to head
0
Hard
1
0
Clay
2
1
Carpet
0
Byron Bertram's wins on the left · Ion Tiriac's on the right · bar lengths share one scale
All meetings (4)
| 1978 | Johannesburg-1 | Hard | R32 | Ion Tiriac | 6-2 6-4 |
| 1977 | Baltimore | Carpet | R32 | Byron Bertram | 6-4 6-2 |
| 1973 | Nice | Clay | R32 | Ion Tiriac | 6-2 6-2 |
| 1970 | Munich | Clay | R32 | Ion Tiriac | 6-2 6-1 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.