Head to head
1
Hard
0
2
Grass
0
John Alexander's wins on the left · Alvin Gardiner's on the right · bar lengths share one scale
All meetings (3)
| 1979 | Atlanta | Hard | R16 | John Alexander | 6-0 6-0 |
| 1971 | Sydney | Grass | R32 | John Alexander | 6-1 6-3 6-4 |
| 1969 | Australian Open | Grass | R64 | John Alexander | 6-4 6-4 6-4 |
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.