Head to head
1
Clay
0
William Alvarez's wins on the left · Onny Parun's on the right · bar lengths share one scale
All meetings (1)
| 1970 | Barranquilla | Clay | R64 | William Alvarez | 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.