Jovan Belcher showed signs of pervasive brain damage like that found in other deceased NFL players, according to a neuropathologist.

Belcher shot and killed his girlfriend in 2012 before committing suicide.

In a report obtained by "Outside the Lines," Dr. Piotr Kozlowski writes that he detected neurofibrillary tangles of tau protein, which is identified with chronic traumatic encephalopathy. The tangles were distributed throughout Belcher's hippocampus, an area of the brain involved with memory, learning and emotion.

Dozens of former NFL players have been diagnosed posthumously with CTE, a neurodegenerative disease linked to dementia, memory loss and depression. The disease, researchers say, is triggered by repeated head trauma.

Belcher's body was exhumed one year after his death, and his brain was examined two weeks later.

If it can be shown that Belcher did have CTE, Belcher's daughter and mother, together, would be eligible for up to $4 million under the proposed concussion settlement between the NFL and former players.

Joe McKnight has suffered a ruptured Achilles during a Thursday practice.

McKnight had emerged as a pass-catcher for the Kansas City Chiefs, catching six passes for 64 yards and two touchdowns in Week 3.

Jamaal Charles has a sprained ankle and how soon he returns is uncertain.

A decision on Charles' status will be made on how he feels and how he can move it.

Charles has just 23 yards on nine carries over the first two weeks of 2014.

Derrick Johnson suffered a ruptured Achilles tendon in the Kansas City Chiefs' loss to the Tennessee Titans.

Johnson crumpled to the ground without any apparent contact and had a grim look on his face as he left the field in a motorized cart.

Johnson played in the Pro Bowl in each of the last three seasons.