Espn article on Vegas bets says the cards O-line ranked 13th in sacks allowed the 2nd half of the season last year.
http://espn.go.com/blog/nfcwest/post/_/id/101261/on-nfc-west-win-totals-arizona-best-bet
Fears regarding the team's pass protection stem largely from the 58 sacks Arizona took last season. The Cardinals allowed 39 of those sacks in their first eight games. They ranked 13th and beat the league average in sacks allowed per drop-back for teams in their final eight games of the season, however. The team has subsequently added guard Jonathan Cooper in the first round. Also, starting tackle Levi Brown and starting center Lyle Sendlein are expected back from injuries. Finally, new quarterback Carson Palmer ranks seventh in fewest sacks taken per drop-back since 2008.
http://espn.go.com/blog/nfcwest/post/_/id/101261/on-nfc-west-win-totals-arizona-best-bet
Fears regarding the team's pass protection stem largely from the 58 sacks Arizona took last season. The Cardinals allowed 39 of those sacks in their first eight games. They ranked 13th and beat the league average in sacks allowed per drop-back for teams in their final eight games of the season, however. The team has subsequently added guard Jonathan Cooper in the first round. Also, starting tackle Levi Brown and starting center Lyle Sendlein are expected back from injuries. Finally, new quarterback Carson Palmer ranks seventh in fewest sacks taken per drop-back since 2008.