Carlos Costa defeated Hendrik Dreekmann 6-1 6-3 in the Hamburg round of 64 on clay. The upset overturned the form book — Hendrik Dreekmann came in leading the head-to-head 2–0, defending last year's round of 64. Carlos Costa claimed a first win over Hendrik Dreekmann in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-01-18 | Australian Open | R128 | hard | Hendrik Dreekmann | 6-2 2-6 6-4 6-3 |
| 1994-05-23 | Roland Garros | R64 | clay | Hendrik Dreekmann | 7-6(6) 6-4 6-4 |
Averages over each player's completed matches in the selected window (99 vs 92). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About