Head to head
1
Hard
0
3
Carpet
0
John Alexander's wins on the left · Frank Froehling's on the right · bar lengths share one scale
All meetings (4)
| 1973 | Johannesburg WCT | Hard | R32 | John Alexander | 6-4 7-5 |
| 1973 | Brussels WCT | Carpet | R32 | John Alexander | 6-3 6-4 |
| 1972 | Chicago WCT | Carpet | R32 | John Alexander | 6-1 4-6 6-2 |
| 1971 | Wembley | Carpet | R32 | John Alexander | 7-5 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.