Glencross was a minus-3 with two penalty minutes through the first three games of the series.
The 32-year-old, who was acquired from the Calgary Flames prior to the trade deadline, had four goals and seven points in 18 regular season games following the deal.
Fehr left Washington’s 2-1 overtime loss last Sunday following a hit from Kyle Okposo in the first period.
Fehr had a minus-1 rating and two penalty minutes in the first three games of the series.
According to Capitals coach Barrty Trotz, Fehr would be available for the second round, if Washington gets past New York in Game 7 on Monday.
Puck drop for Game 7 is set for 7:30 p.m. ET on NBCSN.
Photo courtesy of NHL