Wieters, who is out of the lineup Sunday against the Brewers, is dealing with back tightness and a bruised knee, Jorge Castillo of The Washington Post reports.

EDGE Analysis

Sunday marks the third straight game Wieters will be held out of the starting lineup, as Jose Lobaton has been filling in behind the plate. We now have a reason for Wieters' absence, but on the bright side, he does expect to start at catcher when the Nationals head to Miami to begin a three-game series Monday.