ALLEN PARK -- Veteran linebacker Rocky Boiman, who was signed by the Lions today (Monday), was at practice this afternoon. Boiman, who played six games for the Steelers last season, will provide backup for a position that has been decimated by injuries.

Boiman has also played for the Chiefs, Colts and Titans where he played for Jim Schwartz who was the defensive coordinator.

Starting middle linebacker DeAndre Levy, who injured his groin in the first play of Saturday’s preseason win, did not practice today.

Also, safety Louis Delmas, who played two series on Saturday, did not practice which is not a good sign for his recovery from a groin injury.

Others not practicing were safety C.C. Brown, safety Ko Simpson and cornerback Jack Williams.

The Lions released LB Lee Campbell, WR Eric Fowler and DE Chima Ihekwoaba. FB Jake Nordin was waived/injured.

(Follow me on Twitter @paulapasche.)