Joannette Kruger defeated Barbara Rittner 6-1 6-3 in the US Open round of 128 on hard. The upset overturned the form book — Barbara Rittner came in leading the head-to-head 1–0, defending last year's round of 128. Joannette Kruger claimed a first win over Barbara Rittner in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-02 | Knokke-Heist | R16 | clay | Barbara Rittner | 6-3 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About
Averages over each player's completed matches in the selected window (1 vs 5). ATP, WTA & Challenger.