Head to head
1
Hard
1
2
Clay
2
1
Grass
1
1
Carpet
7
John Alexander's wins on the left · Arthur Ashe's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (16)
| 1979 | Nations Cup | Clay | RR | John Alexander | 6-3 6-7 6-4 |
| 1979 | WCT Aetna World Cup | Carpet | RR | Arthur Ashe | 6-0 6-2 |
| 1978 | Tokyo-2 | Carpet | R32 | Arthur Ashe | 7-6 5-7 7-6 |
| 1977 | Australian Open-1 | Grass | QF | John Alexander | 6-3 6-4 4-6 7-6 |
| 1975 | Louisville | Clay | QF | Arthur Ashe | 6-4 2-6 7-5 |
| 1975 | WCT Finals | Carpet | SF | Arthur Ashe | 3-6 6-1 6-3 6-4 |
| 1975 | Tucson | Hard | QF | John Alexander | 6-7 6-4 6-2 |
| 1973 | Alamo | Hard | QF | Arthur Ashe | 7-5 1-6 7-6 |
| 1973 | Seattle | Carpet | QF | John Alexander | 6-1 6-2 |
| 1972 | Montreal WCT | Carpet | R16 | Arthur Ashe | 6-2 6-4 |
| 1972 | Bretton Woods WCT | Clay | QF | Arthur Ashe | 7-6 6-3 |
| 1972 | Quebec WCT | Carpet | R16 | Arthur Ashe | 6-4 7-6 |
| 1972 | Chicago WCT | Carpet | QF | Arthur Ashe | 4-6 7-6 6-4 |
| 1971 | US Open | Grass | R16 | Arthur Ashe | 6-4 6-7 6-4 6-3 |
| 1971 | Tehran WCT | Clay | SF | John Alexander | 7-6 6-4 |
| 1971 | Dallas WCT | Carpet | R32 | Arthur Ashe | 3-6 6-3 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.