Williams (concussion) has been ruled out ahead of Monday's contest against the Packers, Tim Twentyman of the Lions' official site reports.
The veteran wideout had just two receptions for 14 yards before leaving Week 1 with a concussion. Williams hasn't been able to practice all week so the designation isn't surprising, but it's telling the team hadn't even went through Saturday's practice before making the announcement. Amon-Ra St. Brown, Quintez Cephus and Kalif Raymond should see a healthy bump in playing time heading into Monday's contest.