Marko Tkalec defeated Jan Weinzierl 6-4 4-6 6-3 in the Croatia 1 3 round of 32 on clay. The upset overturned the form book — Jan Weinzierl came in leading the head-to-head 1–0, but Marko Tkalec had been the form player, winning 5 of their last 5 on clay. Marko Tkalec claimed a first win over Jan Weinzierl in two meetings, levelling the head-to-head at 1–1.
Tkalec M. came through in three sets.
Marko Tkalec beat Jan Weinzierl 6-4 4-6 6-3. Umpiry, "Marko Tkalec vs Jan Weinzierl — Croatia 1 3 Round of 32", https://umpiry.com/match/2000-03-18/tkalec-vs-weinzierl-croatia-1-3-r32?utm_source=cite (as of 18 March 2000).