Amanda Coetzer defeated Sandra Cacic 6-2 6-2 in the US Open round of 128 on hard. The result followed the form book — Amanda Coetzer came in leading the head-to-head 2–0, defending last year's round of 128. Amanda Coetzer extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-09 | Philadelphia | R32 | carpet | Amanda Coetzer | 6-2 6-0 |
| 1998-08-31 | US Open | R128 | hard | Amanda Coetzer | 6-1 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.