Aug 18, 2008 9:14 AM EST

Clippers' center Chris Kaman is still receiving criticism for opting to play for Germany in this summer's Olympics, according to ESPN.com.

Kaman, who's great-grandparents were German, hasn't even received approval from his own father.

"My dad is not so thrilled," Kaman said. "My mom has always supported me; she's great. My dad is kind of negative about it. He's like, 'You're not German, you're an American citizen.' "

However, Kaman is now a German citizen, as well.

"He should be happy," Kaman said of his father, whom he has not spoken to since the Olympic tournament began. "It's his grandparents, so he should be happy about it, but sometimes he focuses on the negative a little bit. I tell him, 'C'mon, it's just basketball. That's the way I look at it.' But my dad was a little negative. I had to get in his face a little bit."

Via ESPN