Lions sign CB Walker

The Detroit Lions have their entire rookie class under contract. The Lions came to terms with their final draft pick Tuesday, signing cornerback Tracy Walker to a four-year contract, the team announced. Walker, a third-round selection, was a four-year starter at Louisiana Lafayette. He played safety as a freshman before the team switched him to cornerback. The 6-foot-2, 200-pound Walker led the team in tackles last season with 97, including 3.5 for losses. He also had two of his eight career interceptions in 2017. In other moves Tuesday, the Lions claimed offensive lineman Adam Bisnowaty off waivers from the New York Giants. A four-year starter in college at Pittsburgh, Bisnowaty appeared in only one game with New York last season as a starter.