Head to head
0
Clay
1
1
Carpet
0
Hans-Joachim Ploetz's wins on the left · Cliff Richey's on the right · bar lengths share one scale
All meetings (2)
| 1970 | Brussels | Clay | R16 | Cliff Richey | 6-3 6-0 6-3 |
| 1969 | Macon | Carpet | R32 | Hans-Joachim Ploetz | 3-6 6-4 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.