Head to head
1
Clay
0
0
Carpet
1
Hans-Joachim Ploetz's wins on the left · Ray Ruffels's on the right · bar lengths share one scale
All meetings (2)
| 1969 | Dallas | Carpet | R16 | Ray Ruffels | 7-5 6-2 |
| 1969 | Mexico City | Clay | QF | Hans-Joachim Ploetz | 4-6 6-3 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.