Vikings CB Chris Cook is asking the coaching staff to let him shadow opposing No. 1 receivers this year.
The Vikings have dabbled with this in the past, although Cook has been unable to stay healthy and establish himself in the "shadow corner" role. They'll probably give him another shot at it in 2013, while Xavier Rhodes attends to No. 2 wideouts as a rookie. Cook hopes the coaches will let him match up with Calvin Johnson, Brandon Marshall, and Jordy Nelson in the NFC North.