Posted by ESPN.com's Bill Williamson
Here's one area in which each AFC West team needs to improve upon:
Kansas City: Run defense. The Chiefs allowed Tennessee's Chris Johnson and LenDale White to gain a combined 317 rushing yards in the Titans' 34-10 win on Sunday. The Chiefs are ranked No. 32 in rushing defense as they allow an average of 207 yards a game. New York Jets running back Thomas Jones is a capable player and the Chiefs will have to tighten their run defense or they could get blown out again Sunday.
Oakland: Reaching the end zone. The Raiders broke a touchdown-less streak of 140 plays last week against the Jets when it scored in the third quarter. Oakland didn't reach the end zone again until overtime in its win over the Jets. The Raiders moved the ball against the Jets but they have to do a better job of scoring against the Ravens.
San Diego: Philip Rivers' turnovers. The Chargers quarterback made two critical turnovers late in the Chargers' 23-14 loss at Buffalo. Rivers has generally been very good with ball security this season, but those two miscues were killers. He has to be a lot more careful against the Saints on Sunday.
Note: Denver is on a bye this week.