Parker (hamstring) was spotted on the field at the portion of Wednesday's practice open to the media, Cameron Wolfe of ESPN.com reports.
Parker was forced out of last weekend's loss to the Chiefs before he could record a catch, but the slight hamstring strain he sustained in the contest doesn't look like it will keep him from practicing to start the week. Meanwhile, tight end Mike Gesicki (shoulder) and wideout Jakeem Grant (hamstring) both look uncertain for Sunday's game against the Patriots, making Parker's health of greater importance than usual this week.