Ullmark will guard the home cage during Wednesday's preseason clash with the Capitals, source reports.

EDGE Analysis

Ullmark struggled in his last preseason appearance Saturday against the Rangers, surrendering four goals on just 19 shots en route to a 4-3 overtime loss. Wednesday is the Bruins' last preseason contest, so Ullmark will surely want to submit a far better performance before presumably getting the starting nod for Boston's regular-season opener against the Stars on Oct. 16.