Head to head
0
Hard
1
0
Clay
1
1
Grass
0
Jakob Hlasek's wins on the left · Darren Cahill's on the right · bar lengths share one scale
All meetings (3)
| 1989 | Australian Open | Hard | R128 | Darren Cahill | 6-4 6-7 6-3 7-6 |
| 1988 | Gstaad | Clay | F | Darren Cahill | 6-3 6-4 7-6 |
| 1984 | Melbourne-2 | Grass | R16 | Jakob Hlasek | 6-1 6-7 7-6 |
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.