‘The Bills have signed all but one of their nine draft picks. Third-rounder T.J. Graham, a wide receiver out of North Carolina State, was the only rookie not under contract as of May 24. It’s not entirely surprising. Under the NFL’s rookie wage scale adopted last year after the lockout, first- and second-round picks are guaranteed to receive strong contracts but deals for the fourth- through seventh-rounders aren’t so lucrative and not really worth their slot value. Third rounders are left in the middle between good deals and bad ones so negotiations between agents and team bean counters are taking time. Linebacker Kelvin Sheppard, a third-rounder, was the last to sign with Buffalo last year.’