Celtics Coach Doc Rivers wasn't happy with the way Paul Pierce reacted to fouling out in Game Six of the team's loss to the Hawks on Friday night, according to the Boston Globe.

"I was disturbed by it because we should never get a fourth-quarter technical; that's been our rule all year: no fourth-quarter technicals," Rivers said. "I can take the first three, but the fourth quarter, you can't make up for a technical. It's just not enough time to make up for it in the fourth."

Atlanta's Joe Johnson converted the technical free throw, giving the Hawks a three point lead in a very close game.

A player is automatically given a technical if he throws a headband or wristband, which Pierce did.

"[Delaney] said it is an automatic; he said it's a league rule," Rivers said. "He said 'I had to', and he's right."