Head to head
1
Hard
0
0
Clay
1
1
Grass
1
Wally Masur's wins on the left · Leonardo Lavalle's on the right · bar lengths share one scale
All meetings (4)
| 1992 | Miami Masters | Hard | R128 | Wally Masur | 4-6 7-6(5) 6-2 |
| 1988 | Davis Cup WG R1: MEX vs AUS | Clay | RR | Leonardo Lavalle | 6-2 6-1 4-6 9-11 6-2 |
| 1987 | Davis Cup WG QF: AUS vs MEX | Grass | RR | Leonardo Lavalle | 7-5 6-4 |
| 1987 | Sydney-1 | Grass | R32 | Wally Masur | 6-3 4-6 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.