The Arizona Cardinals (5-7) are not surprisingly, a home underdog in their Sunday game against the San Francisco 49ers (10-2). What's a bit more shocking is the opening line being set at just four points. It's a sign of respect for how much better the Cardinals are playing since they were ten-point underdogs to the Niners in Week 11 and got smoked 23-7.

49ers DE Justin Smith, on a conference call with the media expressed his respect for the work Arizona has made over recent weeks.

"We know it's going to be a hard game down there. They're coming off a big win, playing pretty good football," Smith said.

Smith's had a chance to watch some film on the Cardinals and declared the team much better with Kevin Kolb at the helm. He said the Arizona offense was playing faster and seemed to be running more plays then when they last played. 

The 49ers have won their NFC West but are still playing for seeding in the playoffs. Smith doesn't expect any kind of let down on Sunday.