Head to head
1
Hard
0
0
Clay
1
Mark Cox's wins on the left · Hans-Joachim Ploetz's on the right · bar lengths share one scale
All meetings (2)
| 1969 | St. Petersburg | Clay | R32 | Hans-Joachim Ploetz | 6-1 2-6 6-4 |
| 1968 | Cape Town-1 | Hard | QF | Mark Cox | 6-2 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.