Martin Damm Sr defeated Byron Black 5-7 6-2 6-4 in the Ostrava round of 32 on carpet. The upset overturned the form book — Byron Black came in leading the head-to-head 2–1. Martin Damm Sr narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-16 | Washington | R64 | hard | Martin Damm Sr | 6-2 6-2 |
| 1998-11-09 | Moscow | R32 | hard | Byron Black | 6-2 6-3 |
| 1997-09-29 | Beijing | R32 | hard | Byron Black | 6-4 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (110 vs 180). ATP, WTA & Challenger.