Head to head
1
Hard
0
1
Clay
0
1
Carpet
0
Gene Mayer's wins on the left · Marcelo Lara's on the right · bar lengths share one scale
All meetings (3)
| 1978 | Tulsa | Hard | R32 | Gene Mayer | 6-2 6-1 |
| 1978 | Guadalajara | Clay | QF | Gene Mayer | 6-2 6-2 |
| 1978 | Mexico City-1 | Carpet | R16 | Gene Mayer | 4-6 6-1 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.