http://www.chron.com/sports/texans/article/Texans-QB-T-J-Yates-under-concussion-protocol-12454522.php
Texans QB T.J. Yates cleared under concussion protocol, Taylor Heinicke concussed
Updated 5:33 pm, Monday, December 25, 2017
Houston Texans quarterback T.J. Yates (2) leaves the sidelines after being taken from the field after he was sacked during the second quarter of an NFL football game against the Pittsburgh Steelers at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans quarterback T.J. Yates (2) leaves the sidelines after being taken from the field after he was sacked during the second quarter of an NFL football game against the Pittsburgh Steelers at NRG
... morePittsburgh Steelers defensive back Greg Ducre (38) is tripped up by Houston Texans free safety Kurtis Drummond (23) and inside linebacker Dylan Cole (51) in the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessPittsburgh Steelers defensive back Greg Ducre (38) is tripped up by Houston Texans free safety Kurtis Drummond (23) and inside linebacker Dylan Cole (51) in the Texans 34-6 loss to the Steelers in an NFL
... moreHouston Texans quarterback T.J. Yates walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans quarterback T.J. Yates walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston
... moreHouston Texans running back Alfred Blue (28) is stopped short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans running back Alfred Blue (28) is stopped short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec.
... moreHouston Texans quarterback T.J. Yates (2) leaves the sidelines after being taken from the field after he was sacked during the second quarter of an NFL football game against the Pittsburgh Steelers at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans quarterback T.J. Yates (2) leaves the sidelines after being taken from the field after he was sacked during the second quarter of an NFL football game against the Pittsburgh Steelers at NRG
... moreHouston Texans wide receiver DeAndre Hopkins (10) can't reach a pass in the end zone as he is defended by Pittsburgh Steelers cornerback Joe Haden (21) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans wide receiver DeAndre Hopkins (10) can't reach a pass in the end zone as he is defended by Pittsburgh Steelers cornerback Joe Haden (21) during the second quarter of an NFL football game at NRG
... moreHouston Texans wide receiver Braxton Miller (13) stretches the football toward the goal line as he is tackled short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans wide receiver Braxton Miller (13) stretches the football toward the goal line as he is tackled short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter
... morePittsburgh Steelers cornerback Artie Burns (25) intercepts a pass in the endzone intended for Houston Texans wide receiver Will Fuller (15) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessPittsburgh Steelers cornerback Artie Burns (25) intercepts a pass in the endzone intended for Houston Texans wide receiver Will Fuller (15) during the second quarter of an NFL football game at NRG Stadium on
... moreHouston Texans running back Alfred Blue (28) is stopped short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans running back Alfred Blue (28) is stopped short of the goal line by Pittsburgh Steelers linebacker Sean Spence (51) during the second quarter of an NFL football game at NRG Stadium on Monday, Dec.
... moreHouston Texans offensive guard David Quessenberry (77) gives a thumbs up as walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. Quessenberry played in his first NFL game after being diagnosed with cancer in his rookie year. ( Brett Coomer / Houston Chronicle )
lessHouston Texans offensive guard David Quessenberry (77) gives a thumbs up as walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in
... moreHouston Texans head coach Bill O'Brien walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston Chronicle )
lessHouston Texans head coach Bill O'Brien walks off the field after the Texans 34-6 loss to the Steelers in an NFL football game at NRG Stadium on Monday, Dec. 25, 2017, in Houston. ( Brett Coomer / Houston
... moreTexans quarterback T.J. Yates was being evaluated and cleared under the NFL concussion protocol after being sacked for the fourth time Monday by the Pittsburgh Steelers.
Yates was replaced by backup Taylor Heinicke, but went back into the game after being medically cleared. Heinicke, after Yates was cleared, suffered a head injury and is now being evaluated for a concussion.
Yates left the field and was immediately checked out by doctors, trainers and neurologists under the blue medical tent on the sideline.
He walked off the field at halftime after being replaced by Heinicke.
Heinicke is the fourth quarterback to play for the Texans this year after previous season-ending injuries to Deshaun Watson (torn anterior cruciate ligament) and Tom Savage (concussion).
Heinicke is a former Old Dominion dual-threat quarterback who has previous stints with the New England Patriots and Minnesota Vikings.
This marks his first regular-season action.
He was promoted from the practice squad last week to the active roster.
