Doctors and trainers who have reviewed the video of last Sunday's Texans-Seahawks game believe Houston quarterback Deshaun Watson initially injured his right knee in the fourth quarter and could have even torn his ACL in that game.

The Texans still think Watson suffered the torn ACL on Thursday, but are aware of and curious about the hit their quarterback absorbed Sunday, per team sources.

With the Seahawks leading Houston 27-24, Seahawks defensive end Frank Clark jumped over Texans running back Lamar Miller and rolled up on Watson, who immediately grabbed his right knee on the play. Watson finished the game, didn't complain about the injury after it, and did not get treatment on it last week, per sources.

Watson then fell to the ground in practice on Thursday, when Texans trainers determined their quarterback suffered a season-ending torn ACL. Watson has not decided when to have surgery, but it is considered an eight- to nine-month recovery, per a source, though Watson made it back from this injury in college in five months.