The Raiders have signed 31-year old DT John Henderson to a 1-year deal.  The 6’7″, 335 pound Henderson played in 15 games for the Jaguars last season and he had 36 tackles, 1 tackle for a loss, 3 sacks, he forced 2 fumbles and he defensed 3 passes.  Henderson has now played in 124 games in his 8 years in the NFL and he has made 423 tackles, defensed 38 passes, forced 8 fumbles and he has 29 sacks.  This was a excellent move for the Raiders as Henderson is a pretty good defensive tackle who should help them improve the run defense.