WASHINGTON, D.C. – Washington Wizards President Ernie Grunfeld announced today that the team has exercised the fourth-year contract options on John Wall, Trevor Booker, Kevin Seraphin and Jordan Crawford while picking up the third-year contract options on Jan Vesely and Chris Singleton. Wall, Booker, Seraphin, Crawford, Vesely and Singleton are now signed through the 2013-14 season. Per team policy, terms of the contracts were not released.