Indianapolis Colts quarterback Carson Wentz suffered sprains in both his ankles on Sunday, coach Frank Reich said Monday.
Reich could not yet say yet if Wentz will be able to play in Sunday's road game against the Tennessee Titans.
On Sunday it was thought Wentz had only injured his right ankle.
Jacob Eason would start against the Titans if Wentz is inactive. Eason threw an interception on his second pass attempt in Sunday's 27-24 loss to the Los Angeles Rams after entering the game.