Els Callens defeated Barbara Schwartz 3-6 6-4 6-2 in the Wimbledon round of 128 on grass. The upset overturned the form book — Barbara Schwartz came in defending last year's round of 32. Els Callens extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-07-16 | Knokke-Heist | R32 | clay | Barbara Schwartz | 4-6 7-6(2) 6-2 |
| 1999-09-20 | Luxembourg | R16 | hard | Els Callens | 7-6 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 (10 vs 1). ATP, WTA & Challenger.