The Rams are winless in their last five games but did play the San Fransisco 49ers tough in a tie at Candlestick Park on Nov. 11. Two of their losses though were to strong teams in the Green Bay Packers and New England Patriots.
Entering this week, the Cardinals are in no better position, having dropped their last six games after beginning the season with a 4-0 record. In its most recent loss to the Atlanta Falcons, Arizona's defense played well and forced turnovers, but the offense couldn't produce much with a quarterback change to rookie Ryan Lindley.
St. Louis has played against division opponents, posting a 2-0-1 record, tied with the 49ers for the best in the NFC West.
With the Rams and Cardinals ranking 28th and 30th, respectively, in the NFL in points per game, the over/under is set at a relatively low 37 points. Arizona, especially, has struggled to put up points, failing to eclipse 20 points in its last six contests.