Head to head
1
Clay
0
0
Grass
1
Miguel Olvera's wins on the left · Roy Barth's on the right · bar lengths share one scale
All meetings (2)
| 1970 | Indianapolis | Clay | R64 | Miguel Olvera | 3-6 9-7 6-3 |
| 1969 | US Open | Grass | R128 | Roy Barth | 3-6 1-6 6-4 8-6 6-0 |
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.