Washington Wizards star point guard John Wall did not participate in practice on Friday and instead had an MRI on his troublesome left knee, the results of which are still pending. Wall’s left knee is quickly becoming a concerning issue. He played through it in last week’s 91-88 loss to the Miami Heat and finished with a season-low eight points on 3-of-12 shooting. He then missed their next game against the Toronto Raptors, which the Wizards lost, 100-91, presumably as a precaution. Wall did play in their next two games and looked back to his best against the Charlotte Hornets.