24-year old WR Chaz Schilens will be out indefinitely (maybe half  the year) as he recently has underwent knee surgery.  This is a blow to the Raiders passing game as they were depending on Schilens to help them in 2010.  Schilens has played in 24 games (14 starts) in his career with the Raiders and he has caught 44 passes for 591 yards (13.4 avg) with 4 TD grabs.  The Raiders hope that Schilens will give them a boost in the passing game in the second half of the 2010 season.