Some comments from ESPN:
The Rams beat the Cardinals 17-13 to improve to 3-1 and stand atop the NFC West (tied with the Seahawks, but holding tiebreaker due to Week 2 win over Seattle). The ViewFromVegas is the Rams were the biggest underdogs of NFL Week 4 as they did it as 9.5-point underdogs and +360 on the money line. - Dave Tuley
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The Cardinals' offense struggled again in a 17-13 loss to the St. Louis Rams, scoring just one touchdown. The issues that plagued the Sunday were extensions of what hindered Arizona in Buffalo. But Arizona enters a short week, now, with quarterback Carson Palmer in the concussion protocol. - Josh Weinfuss
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The Rams are 3-1, still in first place in the NFC West after having beaten the presumed top two teams in their division. Their defense forced five turnovers today and has dominated these last three games. But the offense continues to get better -- and that's with Todd Gurley still not having a signature breakout game. Coliseum should be crazy this Sunday. - Alden Gonzalez