Sessions put in 21 points and corralled five rebounds while Walker added 17 points as the Bobcats broke a five-game skid against Washington.
Vaunted first-round draft choice Michael Kidd-Gilchrist helped out with 15 points and eight boards while Tyrus Thomas also reached double figures 10 points in the win.
The Wizards, meanwhile, fell to 0-6 for the second consecutive season despite 19 points from Trevor Ariza.
Beyonce flaunts bikini body, Blue Ivy in vacation pics
Benedict Cumberbatch's dramatic reading of R. Kelly lyrics is just what you need