[simple simon]

Have the Rams done enough on defense to challenge for the NFC West?
Head coach Scott Linehan has brought in about seven potential new starters on defense since coming to St. Louis. He also has extended the contracts of defensive end Leonard Little and linebacker Pisa Tinoisamoa. Tye Hill should develop into a much better cornerback after starting as a rookie. Adam Carriker will help the defensive line. Defensive coordinator Jim Haslett feels much better about the team's speed at linebacker, particularly with Will Witherspoon developing into a star in the middle. The problem remains stopping the run. The Rams gave up 4.9 yards a carry last season. Defensive tackle Jimmy Kennedy is in a contract year. Coaches had trouble getting him to work the schemes last year, but Kennedy's play at tackle is vital to the team's success.

ESPN.com - NFL - Clayton: NFC big questions