The Vikings are already down one key offensive contributor and now have another with an injury concern.

Running back Aaron Jones is questionable to return with a knee injury.

Jones was injured on a play late in the first quarter where he fumbled inside the 10-yard line. According to multiple reporters on the scene, Jones limped to the sideline and was then examined in the medical tent.

But tight end T.J. Hockenson has been ruled out with a concussion. He went down early in the first quarter.

While he was able to walk off the field under his own power, he was examined in the medical tent and then in the locker room where he was ruled out.