Turns out Santa Claus is real, and he's black, and he plays for the Washington Wizards -- because John Wall just got into the holiday spirit by buying Rolex watches for ALL of his teammates. We talked with some peeps over at Govberg Jewelers in Philadelphia who tell us Wall came to them some time ago with the idea to cop Rolex President Day-Date watches for every member of the Wiz squad. BTW -- these watches retail around $40k -- and the Wizards have 16 guys on the roster, so that's around $640k worth of yuletide.