<span style="line-height: 1.5em;">Just when you thought the Arizona Cardinals might start to separate themselves in the division and the St. Louis Rams might suffer their third straight loss, the two teams met in Week 4 and proved both of those sentiments wrong.</span>
St. Louis improved to 2-2 on the season after handing a 24-22 loss to Arizona - its first of the year. The San Francisco 49ers, meanwhile, fell victim to the undefeated Green Bay Packers in the Bay Area, while your Seattle Seahawks secured a 13-10 win over the Detroit Lions on Monday Night Football at CenturyLink Field.
Here's a closer look at what went down around the NFC West during Week 4 of the 2015 regular season:
Arizona Cardinals (3-1)
The Cardinals dropped a 24-22 game to the Rams at Glendale's University of Phoenix Stadium.
After finding the end zone on 11 of 12 red zone trips through the first three weeks, Arizona went just 1 of 5 vs. St. Louis, settling for field goals on five occasions from kicker Chandler Catanzaro ... Quarterback Carson Palmer recorded his first loss in 10 starts, completing 29 of 46 passes for 352 yards, one touchdown, and one interception while suffering four sacks after being dropped just once the previous three weeks ... Wideout Larry Fitzgerald made seven catches for 99 yards, but lost a fumble ... Rookie running back David Johnson carried three times for 18 yards and caught four passes for 63 yards and a touchdown ... Running back Chris Johnson carried 16 times for 83 yards ... Defensive end Calais Campbell led Arizona with 11 tackles, three of which went for loss
Running back Andre Ellington (knee) was inactive for the third consecutive week, left guard Mike Iupati (knee) made his season debut after missing the first three games, and safety Rashad Johnson (back) left the game briefly but returned.
The Cardinals travel to Detroit for a Week 5 game against the winless Lions (0-4).
San Francisco 49ers (1-3)
The 49ers lost their third straight game, falling 17-3 to the Green Bay Packers at Santa Clara's Levi's Stadium.
Quarterback Colin Kaepernick tossed his fifth interception in two games, completing 13 of his 25 passes for 160 yards as his team has been limited to 28 total points the past three games ... Running back Carlos Hyde picked up just 20 yards on eight carries ... Wideout Torrey Smith led all San Francisco pass catchers with two grabs for 54 yards ... Niners linebacker Aaron Lynch had two sacks of Green Bay quarterback Aaron Rodgers
Niners wideout Quinton Patton was checked for a concussion during the game and running back Reggie Bush returned to action for the first time since hurting his calf in Week 1 against the Minnesota Vikings, finishing with one carry for zero yards.
The 49ers meet the New York Giants (2-2) on Sunday Night Football in Week 5 at New Jersey's MetLife Stadium.
St. Louis Rams (2-2)
The Rams were on the better end of that 24-22 result mentioned above, topping the division rival Cardinals on their home turf.
Rookie running back Todd Gurley rushed for all but two of his 146 yards after halftime as the Rams used his 52-yard run to set up the game-winning score on a 12-yard touchdown pass from quarterback Nick Foles to wide receiver Tavon Austin ... Foles finished the game 16 of 24 for 171 yards and three touchdowns, good for a passer rating of 126.9 ... Austin led all St. Louis pass catchers with six grabs for 96 yards, also scoring on a 12-yard pass from Foles in the first quarter ... The Rams defense forced the Cardinals to settle for field goals five times
Linebacker Alec Ogletree broke his ankle in the game, an injury that required surgery.
The Rams head to Green Bay's Lambeau Field for a matchup with the undefeated Packers (4-0).