Primetime Sunday Night Football features a marquee matchup between the San Francisco 49ers and the Chicago Bears.
After the Packers' loss on Saturday night, Ben Johnson, in his first season as head coach, clinched the NFC North, but Chicago is still vying for the No. 1 seed in the conference. Meanwhile, Kyle Shanahan and the 49ers are fighting not only for the top spot in the NFC, but for control of their division as well.
Which team holds the edge entering this showdown? I'll break it all down below in my San Francisco 49ers vs. Chicago Bears Sunday Night Football preview.
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San Francisco 49ers vs Chicago Bears Sunday Night Football Preview & Props

Will Brock Pudy continue his efficient play against this Bears defense?
49ers vs Bears Preview
Since returning from injury in Week 11, 49ers quarterback Brock Purdy has been one of the most efficient players in the NFL. He ranks first in EPA per play and CPOE, and second in success rate. San Francisco has won all five games since his return, doing so by an average margin of 16.4 points.
Over that same stretch, Bears quarterback Caleb Williams ranks 14th in EPA per play and 21st in both CPOE and success rate. Even with some underwhelming efficiency metrics, he's still led Chicago to five wins in six games, with the lone loss coming against Green Bay – a contest that ended on a Williams interception in the end zone.
Williams hasn't been consistently sharp for all four quarters. It often takes until the second half, or the final moments of games, for him to fully settle in. Still, he flashes elite ability with some miraculous throws and benefits greatly from a strong run game.
Behind D'Andre Swift and rookie Kyle Monangai, the Bears have assembled the league's third-best rushing offense, averaging 152.1 yards per game on the ground.
Stopping the run has been an issue for the 49ers all season, and that problem has only worsened since Week 12. In that span, San Francisco ranks dead last in rush success rate allowed and 21st in rush EPA per play.
So even if Williams struggles to find a rhythm early, there's a strong chance Swift and Monangai can carry the offense in the opening stages of this game.
We should also expect a strong performance from Purdy and his skill-position players. While the Bears' defense leads the league in takeaways with 31, it isn't without flaws.
Chicago ranks 12th in EPA per play, but sits just 25th in overall success rate. They've struggled mightily against the run, allowing 5.0 yards per carry (29th in the NFL), though that number has improved to 4.2 over their past three games.
The Bears' secondary has shown progress recently. Over the past five games, they've climbed to above-average marks in dropback EPA and success rate. Still, despite that improvement on the back end, they remain a bottom-half defense against the run.
That combination could set this game up perfectly for Christian McCaffrey.
49ers vs Bears Injury Report
Reportedly, a bug has been going around the Bears' locker room. Offensive lineman Darnell Wright did not initially travel with the team to Santa Clara due to illness, but is traveling separately and remains questionable for tonight's game.
Several other Bears players are also listed as questionable because of the illness, including wide receivers DJ Moore and Olamide Zaccheaus.
Beyond those weapons, Chicago will also be without wide receiver Rome Odunze, who has missed the past two games with a foot injury. The good news, however, is that rookie receiver Luther Burden is expected to return.
On the 49ers' side, the biggest question marks revolve around wide receiver Ricky Pearsall and tight end George Kittle, both of whom are listed as questionable.

San Francisco 49ers vs Chicago Bears Prop Bet
Best Bet: Christian McCaffrey Over 69.5 Rush Yards (-108, at Lucky Rebel)
Oddsmakers opened the 49ers as three-point favorites with a total of 50. Since then, San Francisco has been bet up to -3.5, while the total has climbed to 51.5.
Given the Bears' potential illness-related absences and defensive vulnerabilities, combined with a cross-country trip to face one of the league's most potent offenses, it's no surprise the betting market has leaned toward San Francisco. The move on the over makes sense as well, as the 49ers' defense has its own red flags and Chicago should be capable of exploiting them.
Even as a die-hard Bears fan, I understand how difficult this spot is for Chicago. I do expect the 49ers to win and for this to turn into a higher-scoring game, but with the spread moving off the key number of three and the total being bet up, there isn't much value left jumping in late.
Instead, I'll be attacking the prop market, where I still see an edge.
Christian McCaffrey is set up to feast against this Chicago run defense. His rushing prop sits at 69.5 yards – a number he's eclipsed in four of the last five games since Brock Purdy returned under center. Over that stretch, McCaffrey is averaging 20 carries and 82.6 rushing yards per game.
Nine opposing running backs have rushed for 70 or more yards against the Bears this season. Chicago ranks 24th in rush success rate and 19th in rush EPA per play, allowing five yards per carry overall.
Expect a heavy dose of McCaffrey early to help establish the 49ers' offense, followed by a steady workload if and when San Francisco grabs a lead and looks to control the clock.
NFL Record: 92-79-1 (+3.55 units)
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