Referee Clete Blakeman will lead the seven-person crew of game officials selected to work 50 on Sunday, Feb. 7 at Levi's Stadium, the NFL announced Wednesday.The other members of the Malik Newman Jersey 50 officiating crew are Jeff Rice (umpire), Wayne Mackie (head linesman), Rusty Baynes (line judge), Boris Cheek (field judge), Scott Edwards (side judge), and Keith Ferguson (back judge)....