"We have to keep evaluating him and see where he is at," Williams said. "It's still a little swollen. He had an X-ray that was negative. We'll see how he reacts to it and all the treatments."
Escobar left Thursday's game against the Cubs after one inning after hurting the wrist on a check swing.
With Escobar out of the lineup, Anthony Rendon was back at third base, while Danny Espinosa started at second base. Escobar is off to a great start for Washington, hitting .316 with two home runs and 14 RBIs.
Right-hander Doug Fister, who is on the disabled list because of right forearm tightness, will make a rehab start for Triple-A Syracuse on Sunday.