Argos add controversial former Dallas Cowboys pass rusher David Irving to negotiation list - 3DownNation
David Irving Reportedly Suspended 4 Games for Substance Abuse Violation, News, Scores, Highlights, Stats, and Rumors
Dallas Cowboys insider's shocking revelation about David Irving
Cowboys DT Irving Suspended For Substance Abuse
NFL reinstates ex-Cowboys pass rusher David Irving
Cowboys' Randy Gregory suspended indefinitely for another substance-abuse violation - The Washington Post
Cowboys' David Irving suspended four games for another violation of NFL's substance abuse policy – New York Daily News
David Irving Says It's 'Bulls**t' NFL Won't Let Him Smoke Weed
Cowboys DE David Irving suspended four games by NFL