Assumed because of the amount of snaps mckenzie gets vs amount of production. If mckenzie was getting 4 or 5 catches a game, or even used as a 3rd down weapon, I'd have no issue letting him get the majority of snaps. Seeing his production though, I'd at the very least give Shakir more snaps and more opportunities. At this point, I'm think beasley might be out best option, but who knows