Stefan Koubek defeated Marin Cilic 6-1 7-5 in the AUT vs CRO round robin on clay.
Koubek S. took it in straight sets.
Stefan Koubek beat Marin Cilic 6-1 7-5. Umpiry, "Stefan Koubek vs Marin Cilic — AUT vs CRO Round Robin", https://umpiry.com/match/2006-02-10/cilic-vs-koubek-aut-vs-cro-rr?utm_source=cite (as of 10 February 2006).