Celtics big man Kendrick Perkins has been whistled for 10 technical fouls this season.

He's tied with teammate Rasheed Wallace for the most in the NBA this season.

Any player that reaches 16 technicals will be suspended by the league for one game and Boston is starting to worry about Perkins.

"He's just got to get better, and I told him that at halftime," coach Doc Rivers said following Wednesday's game against the Suns. "We cut it to 9 points and then he gets a tech. I had no idea over what.

"He's got to grow up. He's got to get better. No doubt about it. They're going to listen to Kevin [Garnett]. They're going to listen to Ray [Allen] a little bit. They are going to listen to Paul [Pierce]. They have to listen to Rasheed. They're not going to listen to anyone else. That's enough."

Perkins admits that he plays mad, but doesn't understand why he racks up the whistles.

"I didn't do nothing," said Perkins. "It's nothing I ain't never been in before. Refs and techs, I have been going through this the last three seasons."