Goran Ivanisevic has extended his part-time coaching role with Australian Open semi-finalist Marin Cilic.

The former Wimbledon champion worked with world number nine Cilic at the pair's home event in Zagreb last month, which the 21-year-old won.

Ivanisevic will travel with Cilic to the Masters 1000 events in Miami this month and Madrid in May in place of regular coach Bob Brett.

"It should be fun," said Ivanisevic. "Bob is still his coach but in Miami and Madrid I am going to be his replacement while he is not there. I will be like a mentor to Marin."

Ivanisevic brought a 15-year-old Cilic to Brett's attention in 2004 and the pair have worked together ever since at Brett's academy in Italy.