Brendan Haywood active

MIAMI -- Dallas Mavericks backup center Brendan Haywood was active and testing his ailing right hip during Sunday night's Game 6 against the Miami Heat.

Prior to Sunday morning's shootaround, Haywood was definitive only in that he would be a game-time decision.

"I feel a little better, but it's one of those situations where you feel better doing things that aren't basketball related," Haywood said in the morning. "It's something totally different when you're trying to chase down one of the NBA's elite athletes or you're trying to trap D-Wade (Dwyane Wade) or something like that. That's a totally different ballgame and your hip responds differently to those type of motions."

Haywood strained his right hip flexor prior to the NBA Finals and aggravated it in Game 2. He missed Game 3, played just three minutes in Game 4 and sat out Game 5.

The Mavs' centers have been asked to be quite active defensively in this series with high traps on Wade and Tyson Chandler then being able to drop down to defend the paint and rebound.

Chandler will be prepared to play 40-plus minutes and third-string center Ian Mahinmi will also be on-call. He has played in two games during Haywood's absence, logging eight minutes each time.

Jeff Caplan covers the Mavericks for ESPNDallas.com.