NFL

Chiefs RB Jamaal Charles out after sustaining knee injury vs. Bears

Oct 11, 2015; Kansas City, MO, USA; Kansas City Chiefs quarterback Alex Smith (11) hands off to running back Jamaal Charles (25) during the first half against the Chicago Bears at Arrowhead Stadium. Mandatory Credit: Denny Medley-USA TODAY Sports

Oct 11, 2015; Kansas City, MO, USA; Kansas City Chiefs quarterback Alex Smith (11) hands off to running back Jamaal Charles (25) during the first half against the Chicago Bears at Arrowhead Stadium. Mandatory Credit: Denny Medley-USA TODAY Sports

Kansas City Chiefs running back Jamaal Charles appeared to sustain a non-contact injury to his right knee in the third quarter on Sunday and has been ruled out.

Charles, who made a cut when his right knee buckled, was helped off the field by an athletic trainer and linebacker Justin Houston.

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Charles had 12 carries for 58 yards against the Chicago Bears.

Charles tore his left ACL in 2011.