MELBOURNE, Australia � Eleven fans were ejected from Melbourne Park for disruptive behavior and smuggling flares onto the grounds on the first morning of the Australian Open.

In another incident, police said a group of Croatian supporters were denied entry to the grounds Monday after setting off a flare.
Victoria Police Superintendent Jock Menzel said the 11 ejected people were standing on chairs and bothering spectators during the match between Croatia�s Ivo Karlovic and Czech Radek Stepanek.
Menzel said he was not aware who they were supporting, and said the �people have been removed from the stadium and they�re not welcome to return.�
The incidents on the first day of the Australian Open recall tensions that erupted last year in a chair-throwing brawl between Serb and Croatian fans.