49ers Stun Kyler Murray, Cardinals 20-12 Behind Stellar Defensive Showing

Jeff Wilson Jr. amassed 204 yards from scrimmage, and Kyle Juszczyk scored a pair of touchdowns as the San Francisco 49ers upset the host Arizona Cardinals 20-12 on Saturday at State Farm Stadium.

Wilson also scored on a 21-yard pass from 49ers quarterback C.J. Beathard, who threw for three touchdowns.

Cardinals quarterback Kyler Murray rushed for 75 yards but struggled through the air, completing 31-of-50 passes for 247 yards and an interception.

The 6-9 49ers broke a three-game losing skid.

The 8-7 Cardinals entered Saturday with a two-game winning streak and their playoff hopes in hand. They lost both, as the 7-7 Chicago Bears can jump the Cardinals in the playoff race with wins in their last two games.

Chicago closes at the Jacksonville Jaguars and home against the Green Bay Packers.

Notable Performances

Cardinals QB Kyler Murray: 31-of-50, 247 passing yards, 1 INT

Cardinals RB Kenyan Drake: 18 carries, 45 rushing yards, 1 TD; 2 catches, 5 receiving yards

Cardinals WR DeAndre Hopkins: 8 catches, 48 receiving yards

49ers QB C.J. Beathard: 13-of-22, 182 passing yards, 3 TD

49ers RB Jeff Wilson Jr.: 22 carries, 183 rushing yards; 1 catch, 21 receiving yards, 1 TD

49ers TE George Kittle: 4 catches, 92 receiving yards

Cardinals Have No Answer for Jeff Wilson Jr.

The Cardinals' playoff hopes are in serious trouble after Wilson Jr. torched Arizona for 204 yards and a touchdown via a Beathard pass for 21 yards over the middle:

When he was done, Wilson did something no 49er running back accomplished since Frank Gore in 2009:

The Cardinals defense has played well this season despite losing pass-rushing phenom Chandler Jones to a season-ending torn bicep after five games.

Arizona entered Saturday tied for eighth in the league in fewest yards per play allowed, per Pro Football Reference.

The Cardinals were a respectable 13th in fewest points per game allowed, and Football Outsiders ranked the defensive unit ninth in DVOA (defense-adjusted value over average).

Their rushing defense was merely average (15th, at 4.4 yards per carry allowed), but the Cardinals still came into this game as clear favorites over a 49ers team playing out the string.

Wilson, who was taking over for an injured Raheem Mostert, had other ideas though. He gained 8.3 yards per carry, gaining his 183 rushing yards on just 22 touches.

He routinely gashed the Cardinals for big plays: Five of his second-half rushes went for 10 or more yards, including a 34-yarder that ended with the ball at the Cardinals' 1-yard line.

Wilson isn't a stranger to success this year, as he dominated the New England Patriots with 112 rushing yards and three touchdowns on just 17 carries in October.

But he's largely been lost in the shuffle of a crowded backfield that has included Mostert, Jerick McKinnon, Tevin Coleman and JaMycal Hasty.

He shone Saturday, though, and may have ended the Cardinals' playoff hopes in the process.

Inconsistent Cardinals Drop Another Game to Losing Team

The Cardinals are one of the league's most perplexing teams. 

They have wins over a pair of division leaders (the Buffalo Bills and Seattle Seahawks) and four other victories by 15 or more points.

But the Cardinals have shown a penchant for producing a few inexplicable duds that defy their talent and potential.

Arizona lost to the 5-10 Detroit Lions, 4-10 Carolina Panthers and 6-8 New England Patriots before Saturday, and now the team can add a defeat to the 6-9 49ers as well.

At the offense's best, Kyler Murray is elusive and unstoppable, and DeAndre Hopkins snags everything thrown his way.

At the defense's best, the pass rush catches fire, and a secondary led by Budda Baker and Patrick Peterson is hard to overcome.

Neither unit was anywhere close to its best on Saturday.

The 49ers' defense, led by defensive coordinator (and likely future NFL head coach) Robert Saleh stymied Murray's Cardinals, sacking the quarterback three times and holding him to just 4.9 yards per pass attempt.

San Francisco also got two turnovers: one off a Dan Arnold fumble, and another via an Ahkello Witherspoon interception that shut down the Cardinals' game-tying drive attempt with under five minutes remaining:

On defense, the Cardinals couldn't contain the 49ers' ground and short-passing games. The return of All-Pro tight end George Kittle, who is equally adept at receiving and run-blocking, certainly helped the ground attack. However, fullback Kyle Juszczyk also proved to be a problem, snagging a pair of touchdown passes:

Now the Cardinals are left hoping the Bears lose one of their last two games. Even then, Arizona needs to beat a 9-5 Rams team to have a chance at postseason play.

What's Next?

Arizona will visit the Los Angeles Rams on Jan. 3 at 4:25 p.m. ET. The 49ers will host the Seattle Seahawks at the same time at State Farm Stadium.