Derrick Johnson has been the enemy in Oakland for 13 years, tormenting the Raiders while wearing red for the Kansas City Chiefs.
Johnson has traded sides in the fierce AFC West rivalry, joining the Raiders as the veteran anchor at middle linebacker in a defense that is being rebuilt this offseason.
"It was different, I don't want to say weird, but it's different to put on the silver and black — even shirt — because we haven't put on jerseys and helmets and all of that stuff yet," Johnson said Wednesday. "Even to put on the shirt, it was different for me.