Head to head
1
Hard
0
1
Clay
0
Stefan Koubek's wins on the left · Michael Chang's on the right · bar lengths share one scale
All meetings (2)
| 2001 | Vienna | Hard | R16 | Stefan Koubek | 6-3 3-6 7-5 |
| 1999 | Atlanta | Clay | R16 | Stefan Koubek | 6-1 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.