Seattle Seahawks release Kasen Williams while setting 53-man roster | The News Tribune
Seattle has more surprises in making the moves to set the regular-season roster
New England Patriots bolster edge with Seattle Seahawks' Cassius Marsh - NFL Nation- ESPN
As the Patriots continue to put the finishing touches on their roster, they picked up defensive end Cassius Marsh from Seattle.
Seattle Seahawks cut veteran Ahtyba Rubin
Starting defensive tackle Ahtyba Rubin was released by the Seahawks on Saturday, a day after the team acquired Sheldon Richardson in a trade with the New York Jets.