The Raiders have signed DE/OLB Akbar Gbaja-Biamila to a 2-year contract.  The Raiders must know something that no one else does.  Gbaja-Biamila only played in 1 game last season with the Dolphins and he didn’t even make a tackle.  He has now played in 31 games in his NFL career and he has made 22 tackles, has 2 sacks and he has defended 2 passes.