A quarterback trade from Washington Redskins to Raiders was #13 Jay Schroeder.
I can't recall anyone else wearing that number for The Silver and Black. He later asked to be changed to #10 and his wish was granted. He did play for The Raiders and wore both numbers. I don't have any proof of this other than my own memory and watching Raiders games since 1963.
Who has worn #51 for the Oakland Raiders
16 different player have worn it over the last 50 years. Since 2010 it has been worn by Rod streater.
Jim plunket Oakland raiders