Martin Damm Sr defeated Byron Black 6-2 6-2 in the Washington round of 64 on hard. The upset overturned the form book — Byron Black came in leading the head-to-head 2–1, defending last year's round of 16. Martin Damm Sr narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-09 | Moscow | R32 | hard | Byron Black | 6-2 6-3 |
| 1998-10-19 | Ostrava | R32 | carpet | Martin Damm Sr | 5-7 6-2 6-4 |
| 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 (63 vs 118). ATP, WTA & Challenger.