The Cleveland Browns signed fourth-round defensive back Ibraheim Campbell on Wednesday.
The Browns now signed 11 of 12 draft picks, including defensive lineman Danny Shelton (first round), offensive lineman Cameron Erving (first round), linebacker Nate Orchard (second round), defensive lineman Xavier Cooper (third round), wide receiver Vince Mayle (fourth round), cornerback Charles Gaines (sixth round), fullback Malcolm Johnson (sixth round), tight end Randall Telfer (sixth round), linebacker Hayes Pullard (seventh round) and cornerback Ifo Ekpre-Olomu (seventh round).
Running back Duke Johnson (third round) is the only unsigned draft pick.
Campbell started 45 games at Northwestern, tallying 316 tackles, 11 interceptions, 24 passes defensed, six forced fumbles and two fumble recoveries.