Hardman (abdomen) wasn't spotted at practice Thursday, Matt Derrick of ChiefsDigest.com reports.
After being designated for return from injured reserve Dec. 14, Hardman has been practicing for the past two-plus weeks, with head coach Andy Reid suggesting Wednesday that the receiver would likely be activated ahead of Sunday's game against the Broncos. Hardman's absence from practice suddenly makes his availability for Sunday less of a sure bet, though he could put to rest some of the concern about his status by getting back on the field Friday in some capacity. Since the Chiefs have a full 21-day window to evaluate Hardman before he would need to be added back to the 53-man roster, the team can wait until next week to activate him if there's any concern he won't be ready to play against Denver.