Jelena Kostanic Tosic defeated Karolina Sprem 6-4 6-2 in the Charleston q16 on clay. The upset overturned the form book — Karolina Sprem came in defending last year's round of 16. Jelena Kostanic Tosic extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | Istanbul | R32 | clay | Karolina Sprem | 6-2 7-6 |
| 2004-08-30 | US Open | R128 | hard | Jelena Kostanic Tosic | 6-3 2-6 6-4 |
Averages over each player's completed matches in the selected window (24 vs 49). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About