Head to head
0
Clay
2
1
Carpet
0
Don McCormick's wins on the left · Joaquin Loyo-Mayo's on the right · bar lengths share one scale
All meetings (3)
| 1974 | Davis Cup AME PR: CAN vs MEX | Carpet | RR | Don McCormick | 4-6 6-4 10-8 6-2 |
| 1973 | Davis Cup AME PR: MEX vs CAN | Clay | RR | Joaquin Loyo-Mayo | 6-1 6-2 6-1 |
| 1973 | Davis Cup AME PR: MEX vs CAN | Clay | RR | Joaquin Loyo-Mayo | 6-1 6-2 6-1 |
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.