[1] Didulica was born in Geelong, Victoria, Australia to a Croatian father, Luka, and a Croatian-Australian mother, Mary.
Didulica returned to the Netherlands to play for AZ after being lured by the great Louis Van Gaal as coach.
On 24 April 2006, an Austrian court sentenced Didulica to a fine of €60,000 on the count of physical injury resulting from negligence, for slamming Rapid Wien's Axel Lawaree at a Vienna derby in May 2005.
In more than two years of being part of the Croatia national team, Didulica only made four appearances in friendly matches, against Macedonia, Korea Republic, Hong Kong and Austria.
[5] Just a month after the end of the 2006 World Cup, Didulica announced his retirement from international football with an explanation that he wants to concentrate more on his club career.