Browns quarterback Baker Mayfield will not play Thursday night against the Broncos, the team announced Wednesday.
Case Keenum will start in place of Mayfield.
Mayfield had said Wednesday that he expected to play despite dealing with a torn labrum in his left shoulder. But the team ruled him out one day later.
Mayfield underwent an MRI earlier this week on his left shoulder after re-injuring it on Sunday against the Cardinals when taking a hit by J.J. Watt.
It was initially reported that Mayfield suffered a partially torn labrum in his left shoulder in Week 2.