KANSAS CITY, Mo. -- The Kansas City Chiefs ended the suspense with outside linebacker Justin Houston, listing him on their injury report as probable to play in Sunday's game against the Oakland Raiders at Arrowhead Stadium.
Houston, hit in the head and neck area in last week's game against Tennessee, missed practice Wednesday as the Chiefs put him through the NFL's concussion protocol. He returned to practice on a limited basis on Thursday and was a full practice participant on Friday.
Houston is second in the NFL with 8.5 sacks.
But cornerback Brandon Flowers, who missed a game against the New York Giants two weeks ago because of a sore knee, injured the other knee in practice and was listed as having a 50-50 chance to play against the Raiders.
Another starter, free safety Kendrick Lewis (ankle) practiced for the first time this week and was also listed as questionable for Sunday's game. Tight ends Anthony Fasano (ankle/knee) and Travis Kelce (knee) did not practice all week. Fasano is listed as doubtful, and while Kelce will not play.
The Chiefs have nine other players on their injury report, and all were listed as likely to play: running back Jamaal Charles (toes), wide receiver Donnie Avery (shoulder), punter Dustin Colquitt (knee), tackle Eric Fisher (concussion), guard Jeff Allen (groin), tight end Sean McGrath (knee), fullback Anthony Sherman (knee), offensive lineman Geoff Schwartz (triceps), and linebacker Dezman Moses (toe).