We are down to four teams, three games, two rounds and one champion in the NFL playoffs this year. The Kansas City Chiefs, Buffalo Bills, Philadelphia Eagles and Washington Commanders have made it to the Conference Championship round with a chance to go to the Super Bowl.

We break down the biggest strengths and question marks in the Bills-Chiefs matchup, plus the X-factors that could make all the difference.

Greif: Philadelphia will beat Washington in the NFC because the Commanders’ defense has been leaky (allowing 25.5 points per game in the postseason, 9.5 more than Philadelphia), while the Eagles have ranked among the league’s elite defenses all season; by one metric, they stand tied for the league lead in allowing the lowest success rate.