McCown, who competed 20-of-39 passes for 250 yards, with two touchdowns and three turnovers (two interceptions and one fumble) Sunday against the Lions, was seen limping in the locker room with a wrapping on his back, ESPN.com reports. McCown was sacked six times in the game and took multiple big hits from one of the league's best defenses. He connected with six different receivers, throwing both of his touchdowns to rookie wideout Mike Evans. It's unclear how serious the back injury is, so his practice participation will be worth monitoring next week before the Bucs take on the Panthers in Week 15.