The Cowboys were a little upset at their safeties last season because they often got beat deep.  Hamlin should help out with that problem.  He also is great in run support and with him and Roy Williams patrolling the middle of the field, opposing wide receivers may have frequent cases of alligator arms.  Hamlin played in all 16 games for the Seattle Seahawks last season and he made 96 tackles, 3 interceptions, defensed 8 passes and forced a fumble.  A good signing by the Cowboys.