Seahawks signed DT Jason Shirley, formerly of the Bengals. Shirley has mauler size at 6-foot-5, 338, working at offensive guard for the past two seasons on the Bengals' practice squad. The experiment was finally nixed in 2011 training camp, with Shirley moving back to defense. In Seattle, he'll be a long shot for playing time behind Alan Branch and Brandon Mebane.