Head to head
1
Hard
0
1
Clay
0
1
Grass
0
Colin Dibley's wins on the left · Dennis Ralston's on the right · bar lengths share one scale
All meetings (3)
| 1976 | Boca Raton | Clay | R16 | Colin Dibley | 6-7 7-5 7-6 |
| 1973 | Las Vegas | Hard | R32 | Colin Dibley | 6-4 4-6 7-6 |
| 1971 | Wimbledon | Grass | R32 | Colin Dibley | 3-6 8-9 6-3 6-0 10-8 |
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.