Sasa Tuksar defeated Konstantin Don Gruber 6-3 3-6 7-5 in the Croatia 1 1 semi-final on clay. The upset overturned the form book — Konstantin Don Gruber came in leading the head-to-head 2–1, but Sasa Tuksar had been the form player, winning 4 of their last 9 on clay. Sasa Tuksar narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-03-08 | Croatia 1 2 | R32 | clay | Sasa Tuksar | 4-6 6-3 6-3 |
| 2003-08-25 | Croatia F5 | SF | clay | Konstantin Don Gruber | 6-1 6-2 |
| 2003-07-14 | Austria F2 | R32 | clay | Konstantin Don Gruber | 6-4 4-6 6-1 |
Averages over each player's completed matches in the selected window (5 vs 1). ATP, WTA & Challenger.
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