The Seahawks have signed 24-year old running back Xavier Omon to their practice squad.  He played in 5 games earlier this season for the Bills and he carried the ball 5 times for 22 yards (4.4 ypc) and he also returned 1 kickoff for 26 yards.  Omon has now played in 7 games in his NFL career and he has carried the ball 11 times for 27 yards (2.5 ypc).  Omon was signed to give the Seahawks depth with Julius Jones out of action due to injury.