Update (1:58 p.m.): It is believed that Stewart suffered a torn MCL on Sunday, according to a report from Adam Schefter.
Stewart did not see a lot of time before being injured in the third quarter. Stewart only had one carry and one reception for a combined 32 yards before getting knocked out of bounds on the hit which felled him.
The six-year veteran out of Oregon University has carried the ball only 48 times this season for 180 yards and no touchdowns. His best year came in 2009, when he rushed for 1,133 yards on 5.1 yards per carry. Over his first two seasons, Stewart ran for 20 touchdowns. In the four years since, Stewart has seven on the ground.
Stewart has been behind DeAngelo Williams, who has 662 yards and a pair of touchdowns this season.