Chris Houston's struggles early on this season have been well documented.

He's had rough outings at Green Bay at Cleveland earlier this month and most recently against Cincinnati. All of those performances culminated with him being replaced by rookie Darius Slay in the second half of Sunday's game.

Houston has given up 80-plus-yard touchdown passes to the Packers' James Jones and Bengals' A.J. Green and allowed the bulk of Josh Gordon's 126 yards in Cleveland.

Over the first seven games of the season Houston has been one of the most picked on cornerbacks in the league.

So why all the sudden is the Lions No. 1 cornerback struggling so much?

Part of the problem is he's having a hard time adjusting the different style of play the Lions have implemented in the back end of their defense.

Teams know the Lions strength on defense is their front four and the ability to get after the quarterback. The adjustment from offenses is to get the ball out fast to neutralize the rush.

That's why the pass rush and the coverage are so intricately intertwined.