There were plenty of scowls circling inside the hotel Friday as the battered Nets gathered for a team meeting. No player seemed more visibly frustrated than forward Gerald Wallace, who let off some steam during a brief media session. He was on the bench the entire fourth quarter of the 79-76 loss to the Bulls in Game 3 and finished with five points in 25 minutes. That followed a two-point, 19-minute outing in Game 2. "I couldn't tell you my role,'' Wallace said. "I don't have a clue what my role is on this team.'' This is the same player interim head coach P.J. Carlesimo said the Nets couldn't win without after Wallace scored 14 points in a 106-89 series-opening victory. The coach, however, brushed off Wallace's comments. "We're going through a tough time right now," Carlesimo said. "That's what the playoffs are all about. We're all frustrated. And we have to … I have to do a better job of constantly defining roles and redefining roles so we can perform the way we're capable of performing.''