When the Washington Wizards open their season on Oct. 29 at Miami, they will be shorthanded in the frontcourt. Four Wizards – including rotation bigs Nene and DeJuan Blair – were suspended one game Wednesday by the NBA for leaving the bench during Monday’s scrum with the Chicago Bulls in an exhibition game. Also suspended were Xavier Silas and Daniel Orton, although they are long shots to make the team. The Wizards have 13 guaranteed contracts plus Glen Rice Jr., last year’s