Steffi Graf defeated Barbara Schett 6-3 6-2 in the Hanover quarter-final on carpet. The result followed the form book — Steffi Graf came in leading the head-to-head 1–0, defending last year's quarter-final. Steffi Graf extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-01-18 | Australian Open | R16 | hard | Steffi Graf | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.