Ekeler turned four carries into 29 yards and added an 11-yard catch on two targets during the Commanders' 30-13 loss to the Colts on Sunday in London.
Harris caught three of five targets for 60 yards during Sunday's 30-23 loss to the Seahawks.
Allen turned three carries into one yard during the Commanders' 30-13 loss to the Colts on Sunday in London.
Okonkwo caught two of four targets for five yards in Sunday's loss to the Colts.
Head coach Dan Quinn confirmed Monday that Lane (ankle) will miss the remainder of the season.
The Chargers opened Matlock's (undisclosed) 21-day return window Monday, Alex Insdorf of BoltBeat.com reports.
James (hamstring) is considered week-to-week ahead of the team's Week 5 matchup with Denver, Alex Insdorf of BoltBeat.com reports.
Slater suffered a high-ankle sprain Sunday against the Seahawks, and he is expected to miss 4-to-6 weeks, Ian Rapoport of NFL Network reports.
Head coach Dan Quinn confirmed Monday that Lane (ankle) will miss the remainder of the season.
Coach Dan Quinn said Monday that the Commanders continue to assess what McLaurin (hamstring) may be able to do at Wednesday's practice, John Keim of ESPN.com reports.
