If there's one thing we've learned through 11 weeks of NFL action, it's that no team is perfect.
The Philadelphia Eagles were the last of the unbeaten squads to go down in 2022. But there's a reason there hasn't been an undefeated season since 1972, when the Miami Dolphins completed their unblemished run to a Lombardi Trophy.
While there are plenty of strong teams in this year's crop of Super Bowl contenders, each of them has a potentially fatal flaw that could sink its hopes come playoff time.
Fortunately for these contenders, there's still time to find answers for the questions that could become problems, whether it's a scheme adjustment, getting an injured player back in the lineup or making a roster move.
These are the key questions each contender must answer as it looks to cement its status.
The list includes the top four AFC and NFC teams in the order they appear in the latest power rankings from the Bleacher Report NFL staff.
Kansas City Chiefs: Can They Tighten Up the Run Defense?
There's little reason to be concerned about the Kansas City Chiefs offense. Patrick Mahomes and Travis Kelce have proved they can overcome injuries, an inconsistent running game and various defensive game plans to come up with enough points to win.
The 30-27 road victory over the Los Angeles Chargers in Week 11 was a great example of that.
With wide receiver JuJu Smith-Schuster out (concussion), Mahomes and Kelce connected on three touchdowns.
But the Chiefs' inconsistency in stopping the run is a concern that could prove costly.
According to The 33rd Team, the Chiefs are 26th in EPA per play against zone run and 15th against gap run schemes. Typically, teams that struggle to stop the run can shift toward playing its base personnel package, but that has not been successful for Kansas City.
They are 31st in EPA when playing out of their base personnel, a package they only use 21 percent of the time.
The Chiefs have preferred to play nickel 52 percent of the time but run dime personnel at the third-highest rate in the league.
Led by running back Derrick Henry and quarterback Malik Willis, the Titans rushed for 172 yards on 29 carries in Week 9, allowing them to control much of the game before the Chiefs came back in the fourth quarter to force overtime and eventually claim the win.
That's a team the Chiefs should beat if they meet again in the playoffs, but it will be difficult if they don't have a better plan.