In the past 10 years, only four of the eventual Super Bowl champions had to play in the wild-card round. Just two of those — the Packers in the 2010 season and the Giants in 2007 — failed to win their divisions. So the odds are already stacked against the teams playing this weekend. Here’s a look at why each made the playoffs, and why they could get knocked out.

No. 5 Titans (9-7) at No. 4 Chiefs (10-6)

4:35 p.m. Saturday, ESPN/ABC

How the Titans made it: Their berth is a testament to the weak state of the AFC this year, but give them credit for handling business in their division. Tennessee went 5-1 in the AFC South, splitting with the Texans and sweeping the Colts and Jaguars. They allow just 88.8 yards rushing per game, fourth-best in the league.

How the Chiefs made it: Rookie Kareem Hunt led the NFL in rushing with 1,327 yards and scored 11 total touchdowns. Coach Andy Reid gave up play-calling duties during a four-game skid, and the Chiefs finished 4-0. They have the second-best turnover margin in the NFL (plus-15).

How Tennessee is vulnerable: The Titans’ 19th-ranked scoring offense will have trouble keeping up with the Chiefs, who rank sixth.

How Kansas City is vulnerable: A winter road game at Arrowhead Stadium sounds miserable until you realize the Chiefs have lost five straight postseason games at home. Reid is known to bungle clock management late in games.

No. 6 Bills (9-7) at No. 3 Jaguars (10-6)

1:05 p.m. Sunday, CBS

How the Bills made it: They got the help they needed, celebrating wildly as they watched video of the Bengals erasing the Ravens’ wild-card bid with a 49-yard touchdown on fourth-and-12. LeSean McCoy rushed for 1,138 yards, fourth-most in the league.

How the Jaguars made it: Investments on defense finally paid off. In the offseason they signed Calais Campbell, who posted a career-high 14.5 sacks, and A.J. Bouye, who teamed up with 2016 first-round pick Jalen Ramsey to form a Pro Bowl cornerback tandem.

How Buffalo is vulnerable: Trading DT Marcell Dareus to the Jags could prove calamitous if he plays with inspiration. Tyrod Taylor was sacked 46 times, more than only two other QBs. McCoy will be out or hindered by a bad ankle.

How Jacksonville is vulnerable: A Blake Bortles meltdown is in play. In a Week 17 loss to the Titans, he had a career-low 33.7 passer rating.

No. 6 Falcons (10-6) at No. 3 Rams (11-5)

8:15 p.m. Saturday, NBC

How the Falcons made it: After an early three-game losing streak, last year’s NFC champion finished 7-3. During that stretch Atlanta allowed more than 23 points just once, in a 34-31 win over the Seahawks. Matt Ryan notched his seventh straight 4,000-yard passing season.

How the Rams made it: First-year coach Sean McVay installed a killer offense, getting the most out of Todd Gurley, who led all running backs with 139.5 total yards per game. Jared Goff led the NFL’s top scoring offense (29.9 ppg) with 28 TD passes and just seven picks.

How Atlanta is vulnerable: The Falcons are mired in a scoring slump, averaging 17.6 points over their past five games. No lead is safe after their epic collapse in the last Super Bowl.

How Los Angeles is vulnerable: The Rams are only 4-4 at home this season, rank 28th in run defense and haven’t been in a playoff game in 13 years. Can anyone stop Falcons wide receiver Julio Jones?

No. 5 Panthers (11-5) at No. 4 Saints (11-5)

4:40 p.m. Sunday, Fox

How the Panthers made it: The playoff formula is the same as it was two years ago, when Carolina advanced to the Super Bowl. Cam Newton dominates through the air (3,302 yards) and on the ground (754 yards, 6 TDs). A defense loaded at linebacker ranks No. 3 vs. the run.

How the Saints made it: They took pressure off QB Drew Brees with the NFL’s 10th-ranked scoring defense. Mark Ingram and likely rookie of the year Alvin Kamara power the league’s fifth-ranked running game. Sweeping Carolina helped them win the NFC South.

How Carolina is vulnerable: Newton is its leading rusher, which is an indictment of the team’s running backs. Losing to the Falcons last week cost the Panthers a division title, which would have let them host a game. New Orleans is 7-1 at home this season.

How New Orleans is vulnerable: Leading receiver Michael Thomas (104 catches, 1,245 yards) has been limited by a hamstring injury.