FILE - In this Jan. 13, 2016, file photo, Pittsburgh Steelers wide receiver Antonio Brown, right, who is following NFL concussion protocol, walks on to the indoor practice field past injured quarterback Ben Roethlisberger, during an NFL football practice, in Pittsburgh. The Steelers have ruled out All-Pro wide receiver Antonio Brown from Sunday's AFC divisional playoff game against Denver while he recovers from a concussion. Brown left last weekend's wild-card win over Cincinnati after taking a shot to the head from Bengals linebacker Vontaze Burfict. (AP Photo/Gene J. Puskar, File)