Brown was the recipient of a huge hit from Ravens safety Darian Stewart after making a catch in the first quarter. He appeared dazed as he walked to the sideline, and he was immediately taken to the locker room for further observation. He was tested under the NFL's concussion protocol and returned to the Steelers' sideline midway through the second quarter. He re-entered the game with about five minutes to play in the first half.
Brown had two catches for 18 yards before being forced out with the injury.
Antonio Brown is being evaluated for a possible concussion. His return is questionable. — Pittsburgh Steelers (@steelers) September 12, 2014
AB cleared the concussion protocol. He will return to the game. — Bob Labriola (@BobLabriola) September 12, 2014
This post has been updated.