Albert Costa defeated Oliver Gross 6-2 6-2 in the Hamburg Masters round of 32 on clay. The upset overturned the form book — Oliver Gross came in leading the head-to-head 1–0, defending last year's round of 16, but Albert Costa had been the form player, winning 3 of their last 7 on clay. Albert Costa claimed a first win over Oliver Gross in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-31 | US Open | R128 | hard | Oliver Gross | 2-6 4-6 7-5 6-2 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 (200 vs 52). ATP, WTA & Challenger.