The NBA players' union plans to file a complaint with the National Labor Relations Board because one of its officials was denied access to Boston's locker room prior to Game Two on Thursday night, according to ESPN.com's Chris Sheridan.

Spokesman Dan Wasserman said the union was initially told that no one from their organization was allowed in the Celtics' locker room.

After calls were made to the league office, the team allowed Union director Billy Hunter to enter.

"The Celtics are the only team in the league that believes they have the right to keep union personnel from the locker room, and as a result we're filing a complaint with the NLRB," Wasserman said.