Chiefs' Chris Lammons: Suffers potential setback

Lammons (concussion) is questionable for Sunday's game against the Rams.

Lammons suffered a concussion in Week 10 and also sat out Week 11. After returning to practice Wednesday and Thursday, it appeared that Lammons was on track to suit up against the Rams. However, he failed to log any participation Friday, suggesting he suffered a potential setback while placing his status for Sunday in jeopardy.