Deep receiver class faces high hopes for immediate impact in NFL

The upcoming NFL draft features a tantalizing class of wide receivers expected to make an immediate impact as rookies.It’s a tall task even for an exceptionally deep group that’s expected to produce up to a half dozen first-round picks Thursday night.Receivers face one of the hardest adjustments to the pros because they have to absorb a monster playbook, beat press coverage and elude D-backs who are quicker, stronger and savvier.Sometimes the gamble pays off; sometimes it doesn&rsquo