The Chiefs have felt the effects of losing CB Brandon Carr in free agency, and they showed in Week Nine, especially with CB Travis Daniels.
Chiefs CB Brandon Flowers hasn't played well so far this season, but the team doesn't have a capable backup to replace him.
On a team that is lacking playmakers on both offense and defense, it is the Chiefs' special teams that might be asked to come through with big performances.
Three Chiefs defensive backs still have a chance to finish third on the depth chart at cornerback.
According to GM Scott Pioli, adding speed was essential for the Chiefs to dig themselves out of the AFC West basement, which they did in 2010.
Stopping the pass hasn't exactly been the strength of the Chiefs' defense, but don't blame the rookies, like SS Eric Berry, for the team's occasional lapses in the secondary.
What was previously one of the Chiefs' strengths became the primary reason they lost a critical division game to the Raiders on Sunday.