The top seeded Marin Čilić , who won his home tournament for the third time, won the singles against Jürgen Melzer 6: 3, 6: 1. The doubles were won by Julian Knowle and Filip Polášek , who won their third joint final for the first time, against Croatians Ivan Dodig and Mate Pavić 6: 3, 6: 3.
The field of participants in the single competition consisted of 28 players, that of the doubles competition consisted of 16 pairs.
The qualification for the PBZ Zagreb Indoors 2013 took place from February 2nd to 4th, 2013. Four qualifying places were played that entitle them to participate in the main draw of the tournament.
At the PBZ Zagreb Indoors 2013 the following prize money and world ranking points were paid out or credited for reaching the respective round. Players who entered the main field from qualification received the specified qualification points in addition to those for reaching the respective round. Otherwise the amounts are not to be understood as cumulative. The amounts for the double competition were per player.