Raiders restructure WR Ronald Curry; QB Jake Plummer retires from Buccaneers; Lions release DL Tyoka Jackson Edit: Cowboys sign OL Leonard Davis (ARI) Edit: Cowboys re-sign K Martin Gramatica; Broncos sign RB Travis Henry (TEN); Browns sign DB Kenny Wright (WAS); Texans sign RB Ahman Green (GB); Dolphins sign TE David Martin (GB)
