Head to head
1
Hard
0
1
Clay
1
John Alexander's wins on the left · Patricio Cornejo's on the right · bar lengths share one scale
All meetings (3)
| 1978 | Louisville | Clay | QF | John Alexander | 6-1 6-1 |
| 1974 | Boston | Clay | R64 | Patricio Cornejo | 7-5 6-2 |
| 1973 | Miami WCT | Hard | R32 | John Alexander | 4-6 7-6(6) 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.