Atlanta's defense faces a severe test Sunday at Kansas City but will be strengthened by the NFL debut of cornerback , the team's top draft choice, who sustained a small fracture in his left hip during an Aug. 28 exhibition game. Hall might have been able to play last Sunday against San Diego, but Mora opted for a conservative approach..We didn't play well enough to win in enough areas, on enough downs."San Francisco has a quick turnaround before a key division matchup at St. Louis on Thursday night but the 49ers won't have linebacker Aldon Smith, who is seeking treatment following his arrest Friday morning on suspicion of DUI and marijuana possession.Smith apologized after the game to "everybody I let down," while 49ers CEO Jed York defended the organization's decision to let him play ahead of him leaving the team to get help."Our opinion is if you're sitting someone down and paying them to sit down when they're going to seek treatment in the future, we didn't