The Wizards have completed a sign-and-trade deal with the Mavericks to acquire free agent F/C DeJuan Blair for the rights to 2009 second-round draft pick Emir Preldzic, the team announced Wednesday night. The Wizards will bring in Blair on a three-year contract worth $6 million, according to multiple sources with knowledge of the situation. The Wizards now have big men Nene, Drew Gooden, Al Harrington, Marcin Gortat, Kris Humphries, Kevin Seraphin and Blair, meaning things will be crowded up front. But Nene and Gortat are expected to handle the bulk of the minutes.