Head to head
0
Hard
2
0
Grass
1
Byron Bertram's wins on the left · Cliff Drysdale's on the right · bar lengths share one scale
All meetings (3)
| 1980 | Wimbledon | Grass | R128 | Cliff Drysdale | 6-2 3-6 3-6 7-6 6-4 |
| 1973 | Johannesburg-2 | Hard | QF | Cliff Drysdale | 6-2 6-2 6-3 |
| 1971 | Johannesburg | Hard | R32 | Cliff Drysdale | 6-3 6-7 3-6 6-3 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.