Head to head
2
Clay
1
0
Carpet
1
Juan Gisbert Sr's wins on the left · Mike Estep's on the right · bar lengths share one scale
All meetings (4)
| 1975 | Boston | Clay | R32 | Mike Estep | 6-0 4-6 6-0 |
| 1975 | Bastad | Clay | R32 | Juan Gisbert Sr | 6-4 6-4 |
| 1973 | Hampton | Carpet | R16 | Mike Estep | 6-4 3-6 7-6(0) |
| 1971 | Cincinnati | Clay | R64 | Juan Gisbert Sr | 6-4 6-3 |
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.