The Houston Texans fear rookie quarterback Deshaun Watson suffered a torn ACL in practice Thursday, sources informed of the situation told NFL Network Insider Ian Rapoport.

Watson will undergo an MRI to confirm the injury next, per Rapoport. He suffered the injury on a non-contact play. If the MRI confirms the injury, Watson's remarkable rookie season will be over.

Watson was coming off the most impressive performance of his young career before suffering the injury. He passed for 402 yards and four touchdowns in the Texans' 41-38 loss to the Seattle Seahawks in one of the most exciting games of the season.

The performance helped make him the first rookie quarterback to ever win AFC Offensive Player of the Month honors on Thursday. He also was named the NFL's Offensive Rookie of the Month of October.