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Darius Slay is one of three Detroit Lions starters who have suffered a mid-week injury.

(Mike Mulholland | MLive.com)

ALLEN PARK -- The Detroit Lions entered the week relatively healthy, but have had three starters get nicked up in practice as the team preps for Sunday's contest with the Minnesota Vikings.

On Wednesday, right tackle LaAdrian Waddle suffered what the team originally reported as a "head injury," but was changed to a concussion on Thursday's practice report.

Also on Thursday, cornerback Darius Slay and linebacker Tahir Whitehead were both limited with shoulder injuries.

The Lions continue to be without defensive tackle Nick Fairley as he recovers from a knee injury, and as reported earlier, defensive tackle Ndamukong Suh and linebacker Josh Bynes missed Thursday's session with an illness.

For the Vikings, the team continues to be without linebacker Anthony Barr (knee) and defensive tackle Sharrif Floyd (knee). Defensive end Everson Griffin (back) was limited both Wednesday and Thursday, while safety Harrison Smith (shoulder) went from limited on Wednesday to full participation Thursday.

Both teams are required to release game designations for all injured players on Friday at 4 p.m.

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