Irina Spirlea defeated Amanda Coetzer 7-6 6-4 in the US Open round of 16 on hard. The upset overturned the form book — Amanda Coetzer came in leading the head-to-head 2–1. Irina Spirlea narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-30 | US Open | R128 | hard | Irina Spirlea | 6-1 7-5 |
| 1998-03-30 | Hilton Head | F | clay | Amanda Coetzer | 6-3 6-4 |
| 1997-01-28 | Tokyo | R16 | hard | Amanda Coetzer | 6-4 2-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.