Bears running back Matt Forte suffered a Grade 2 MCL sprain in Sunday's loss to the Chiefs, according to sources. Injuries such as these typically sideline players two to six weeks. There are four games left in the season. Forte walked off the field with athletic trainers in the first quarter after taking a shot to the right knee. The club immediately declared him out. As he left Soldier Field after the game, he said it was "just a sprain. I'll be fine."