Marin Cilic successfully defended his Zagreb Indoors crown with a hard-fought 6-4 6-7 (5/7) 6-3 win over Michael Berrer.

The top seed, who reached the semi-finals of the Australian Open last week, needed just one break of serve to take the opening set but missed out on a closely-fought second with Berrer playing an impressive tie-break.

That took the match into a decider, and Cilic's experience told with another break in game four ultimately enough to secure his fifth ATP Tour trophy.

Berrer, ranked 65 in the world, was making his first appearance in a tour final.