Washington Redskins wide receiver DeSean Jackson and tight end Jordan Reed have missed practice, putting their availability for Sunday's game at the Detroit Lions into question.

Jackson has a sore left shoulder. Reed still is dealing with the effects of a concussion that forced him to miss last week's game for the Redskins (4-2).

Reed sat out Thursday after participating in practice a day earlier while wearing a yellow, non-contact jersey. Jackson missed both days.