His older brother, Nikola, is one of the best handball players in the world who was named best player in the world by IHF two times, but Karabatic decided to play tennis and won France championship for 10 years old in 1998.

In 2009 he joined the senior team of the club, in the same year his older brother returned to Montpellier AHB again.

In his first two years as professional player, Karabatic won the French championship two times in 2009 and 2010.

He signed for Pays d'Aix Université, which only promoted to LNH Division 1, with his brother Nikola.

In 2014, Karabatic played for the first time with France in an official competition in EHF Euro in Denmark.