Konstantinos Economidis defeated Marko Tkalec 7-6 6-3 in the Greece F6 semi-final on hard. The upset overturned the form book — Marko Tkalec came in leading the head-to-head 2–0. Konstantinos Economidis claimed a first win over Marko Tkalec in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-05-28 | Greece F3 | F | hard | Marko Tkalec | 6-3 6-7(2) 7-6(5) |
| 2000-02-14 | Croatia F1 | R16 | hard | Marko Tkalec | 6-3 6-2 |
Averages over each player's completed matches in the selected window (19 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