The Cowboys will be without a starting defensive lineman for the rest of the regular season. Dallas owner Jerry Jones announced that defensive tackle Johnathan Hankins has sustained a pectoral strain that will cause him to miss the final four games. Hankins was traded to the Cowboys in October from the Las Vegas Raiders. To try to fill the hole on the D-line, the Cowboys worked out veteran defensive tackle Anthony Rush on Tuesday. Dallas is preparing to visit Jacksonville on Sunday.