He was born in Slovenia have Slo passport but have Serbian origin
Few years ago Sasha wanted to play for Serbian pro team but there was a problem because he played for Slovenian national juniors team and there is rule that about that. he had administrative problem
His father Vaso Vujačić is a Serbian basketball coach.
If you look at his site he is helping Serbian Orthodox Church all around the world and it's not the 1st time that Sharapova took participation in helping SOC