ZAGREB, Croatia, Feb. 5 (UPI) -- Top-seeded Ivan Ljubicic beat qualifier Stefan Koubek, 6-3, 6-4, Sunday in the final of the PBZ Zagreb Indoors tennis tournament in Croatia.
The 26-year-old Ljubicic, who is No. 5 in the world, claimed his fifth career singles crown and rose to 14-1 for the season.
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His lone loss was to Marcos Baghdatis in the quarterfinals at the Australian Open. He also won the event in Chennai, India last month.
Ljubicic earned $53,335 Sunday.
Koubek, who was aiming for his fourth career championship, fell to 3-3 all-time against the winner.
