The Patriots have signed 29-year old DT Terdell Sands.  Sands played in 16 games for the Raiders last season and he made 29 tackles, defensed 2 passes and he had 2 sacks.  He has now played in 76 games in his NFL career and he has made 129 tackles, has defensed 10 passes, has 4 sacks and he has picked off 1 pass.  Sands adds another big body to help out against the run for the D.  The Patriots released OLB Prescott Burgess just one week after acquiring him from the Ravens.  He must have made quite a good first impression.