Television cameras showed Rodgers walking off the field for the locker room. He exited the game with Detroit leading, 14-0. It's unclear which play Rodgers might have been injured on before leaving.
Rodgers has started all 16 games for the Packers this season, passing for 4,416 yards and 25 touchdowns. He also has been sacked 48 times, tied for third most among NFL QBs this season.
Kizer's only real playing time prior to Sunday came in the season opener when Rodgers missed a portion of the first half with a knee injury before returning to rally the Packers to a comeback win over the Chicago Bears. In that game, Kizer completed 4 of 7 passes for 55 yards. He also threw an interception.
In addition to Rodgers, offensive tackle David Bakhtiari also left the game in the first half after suffering a hip injury.