Head to head
0
Hard
2
1
Clay
1
Mike Cahill's wins on the left · Jose-Luis Clerc's on the right · bar lengths share one scale
All meetings (4)
| 1979 | Johannesburg-2 | Hard | R16 | Jose-Luis Clerc | 6-0 7-5 |
| 1979 | Boston | Clay | R64 | Mike Cahill | 6-2 7-5 |
| 1979 | North Conway | Clay | R32 | Jose-Luis Clerc | 6-2 6-1 |
| 1978 | US Open | Hard | R128 | Jose-Luis Clerc | 7-6 3-6 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.