Roy Williams (safety), American Football Database
Here are the hardest hitters in NFL history
League penalty collars Cowboys star – The Denver Post
Dallas Cowboys' all-time teams - Tom Landry vs. Jerry Jones eras
NFL replay review: Lions GM outlines proposal for change - Sports Illustrated
Alex Smith starts in Redskins 15-13 win over Jets
PETA urges NFL to call audible on term 'horse-collar tackle'
NFL suspends Detroit Lions' Ndamukong Suh two games for stomping incident
SB loss to Pats foiled Faulk – Boston Herald
Cowboys' Williams injured four with tackle in 2004 - ESPN
Top 60: Revealing Greatest Cowboys of All-Time
Lions DT Ndamukong Suh suspended 2 games - Deseret News