Head to head
2
Clay
0
1
Grass
2
0
Carpet
1
John Alexander's wins on the left · Colin Dibley's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1978 | Queen's Club | Grass | QF | Colin Dibley | 6-4 6-4 |
| 1977 | Toronto-2 | Clay | QF | John Alexander | 7-5 6-4 |
| 1977 | Nottingham | Grass | R32 | Colin Dibley | 6-3 4-6 6-3 |
| 1977 | Australian Open-1 | Grass | R16 | John Alexander | 6-4 6-2 6-2 |
| 1976 | Madrid-2 | Clay | R64 | John Alexander | 6-4 3-6 13-11 |
| 1974 | San Francisco | Carpet | R64 | Colin Dibley | 7-6 6-2 |
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.