The ban on the horse-collar tackle maneuver in American football was named after what 1980-born University of Oklahoma college football player?
Horse-collar tackle:  The technique is most closely associated with Pro Bowl safety Roy Williams. Horse-collar tackle:  This kind of tackle was banned from the NFL during the 2005 off-season. Horse-collar tackle:  The rule forbidding it is often referred to in the press as "The Roy Williams Rule". Roy Williams (safety):  He played college football for the University of Oklahoma, and was recognized as a unanimous All-American.
i don't know