Asomugha to retire as a Raider

Once a Raider, always a Raider. While cornerback Nnamdi Asomugha has spent the last two-plus seasons away from Oakland, he’ll retire on Friday as a member of the Silver and Black.  The team has announced that Asomugha will make his announcement during a 6:00 p.m. ET press conference. Also attending the event will be Raiders…