Practice Report: Johnson out again

ALLEN PARK, Mich. -- Detroit Lions wide receiver Calvin Johnson missed his second straight day of practice Thursday because of his ailing knee.

This could be a mild cause for concern for the Lions, as Johnson typically has missed only one day of practice during the week to rest the knee.

Rookie Ziggy Ansah missed his sixth straight day of practice, as did cornerback Bill Bentley. Running back Montell Owens also missed practice for the second straight day.

Receiver Nate Burleson was at practice, but only participated in individual drills.