ALLEN PARK — Detroit’s inconsistent secondary took a hit when cornerback Eric King was placed on the injured reserve list today. He suffered a significant shoulder injury in Sunday’s loss to Pittsburgh. With his departure the Lions have one opening on their 53-man roster. ... Also defensive tackle Mathias Askew was placed on the injured reserve list for the practice squad. ... Wide receiver Logan Payne, who joined the Lions last week, was released from the practice squad. ... They signed wide receiver Kole Heckendorf (North Dakota State) and defensive tackle Jervonte Jackson (Florida Atlantic) to the practice squad. — PAULA PASCHE