Williams (hamstring) was left off Kansas City's injury report Monday ahead of Thursday night's regular-season opener against Baltimore, Matt McMullen of the Chiefs' official site reports.
Williams did not participate in Tuesday's practice due to a hamstring injury, Pete Sweeney of ArrowheadPride.com reports.
Williams (illness) has no injury designation ahead of Monday's game against the Raiders.
Williams (illness) is inactive for Sunday's game against the Patriots.
The Chiefs list Williams as questionable for Sunday's game against the Patriots due to an illness.