Head to head
0
Hard
1
0
Clay
1
0
Grass
1
1
Carpet
1
Byron Bertram's wins on the left · Roscoe Tanner's on the right · bar lengths share one scale
All meetings (5)
| 1978 | San Jose | Carpet | QF | Roscoe Tanner | 6-0 7-5 |
| 1977 | Queen's Club | Grass | R16 | Roscoe Tanner | 7-5 6-2 |
| 1977 | Denver | Carpet | R32 | Byron Bertram | 6-7 6-4 6-3 |
| 1977 | Davis Cup AME SF: USA vs RSA | Hard | RR | Roscoe Tanner | 6-4 6-2 1-6 6-4 |
| 1976 | Columbus-2 | Clay | R16 | Roscoe Tanner | 6-2 6-0 |
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.