Head to head
2
Hard
0
2
Clay
0
1
Carpet
0
Raul Ramirez's wins on the left · Onny Parun's on the right · bar lengths share one scale
All meetings (5)
| 1977 | Denver | Carpet | R32 | Raul Ramirez | 6-1 6-1 |
| 1976 | Caracas WCT | Hard | R16 | Raul Ramirez | 6-4 6-3 |
| 1975 | US Open | Clay | R32 | Raul Ramirez | 1-6 6-3 6-3 |
| 1975 | Louisville | Clay | R16 | Raul Ramirez | 6-2 6-2 |
| 1974 | Johannesburg-2 | Hard | R16 | Raul Ramirez | 0-6 6-3 7-5 |
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.