DuJuan Harris left the Green Bay Packers' 17-10 defeat to the Seattle Seahawks with a knee injury last night.
The running back, who started the game ahead of rookie Eddie Lacy, had just three carries for two yards before sustaining the knock mid-way through the second quarter.
NFL.com reports that the injury is not thought to be serious, and that the 24-year-old was able to make his way to the sideline without assistance.
The injury is to the same knee which developed a problem at the start of training camp, limiting his availability during the pre-season.
Harris will undergo tests on the knee later today.