(Renton, WA)  --  The Super Bowl champion Seattle Seahawks will have one of the NFL's toughest schedules in 2014.  The formula used to determine strength of schedule includes the win-loss records of opponents in 2013.  The Seahawks' 2014 opponents had a combined winning percentage last season of .561, which is sixth-highest.  Seattle will open the regular season on September 4th at home against Green Bay.