Head to head
1
Hard
1
Wolfgang Popp's wins on the left · Andrew Castle's on the right · bar lengths share one scale
All meetings (2)
| 1988 | Seoul | Hard | R16 | Andrew Castle | 2-6 6-2 6-2 |
| 1987 | Tel Aviv | Hard | R16 | Wolfgang Popp | 6-7 6-4 6-2 |
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.