Arizona Cardinals WR JJ Nelson has made several terrific catches during organized team activities this offseason and said that playing in 2015 helped boost his confidence. Head coach Bruce Arian said he believes Nelson could make an impact on offense in 2016. ‘He has a very unique skill in tracking the ball that the great ones have when the ball’s coming over your opposite shoulder,’ Arians said. ‘When you have a little fast guy that can do that, you have a special one.’