Borna Coric has appointed Ivica Ancic as his new coach.
Ancic previously coached his brother, former Top 10 player Mario Ancic, on the ATP tour.
The 19-year-old Coric announced the decision on social media.
“I am happy to start the relationship with a coach who helped his brother, Mario, on the way to Top 10,” he wrote.
Coric, who has worked with multiple coaches during his career, announced two weeks ago that he and Miles Maclagan stopped their partnership, which began during the 2015 offseason.
Coric is No. 42 in the rankings.