Here's a quick overview of the teams taking the field Saturday.
Houston Texans 9-7 (1st in AFC South)
Though the Houston Texans got off to a slow 2-5 start, they managed to make enough strides down the stretch to take control of an AFC South division that was ripe for the picking.
Houston won seven of its final nine games, thanks in large part to some standout performances from the league's third-ranked defense (just 310.2 yards per game allowed). Defense is easily the biggest strength for the Texans, and pass-rusher J.J. Watt is arguably the team's biggest leader.
However, Houston does have talent on the other side of the football. Wide receiver DeAndre Hopkins (111 receptions, 1,521 yards and 11 touchdowns) has emerged as one of the league's brightest young offensive playmakers. Quarterback Brian Hoyer, who recently returned from his second concussion of the season, is a steady, if unspectacular presence under center.
Houston might not be as balanced as some of the other teams in the postseason, but it definitely boasts enough talent to compete.
Kansas City Chiefs 11-5 (2nd in AFC West)
Like the Texans, the Kansas City Chiefs got off to a slow start to the season (1-5). However, they have been the league's hottest team since and are rolling into the postseason with an incredible amount of momentum.
Kansas City has won 10 games in a row, primarily because of a defense that is ranked third in points allowed (just 17.9 per game).
The Chiefs aren't just a defensive team, though. With quarterback Alex Smith, tight end Travis Kelce, wide receiver Jeremy Maclin and running backs Charcandrick West and Spencer Ware, Kansas City has enough firepower to engage in a shootout if necessary.
K.C. is practically swaggering into the postseason, and with good reason. It's going to take a heck of a team effort for anyone to put an end to the Chiefs' winning streak.
Cincinnati Bengals 12-4 (1st in AFC North)
The Cincinnati Bengals are in the postseason for the fifth consecutive year, but this is only the second time in that span that they've entered as the AFC North champions.
Cincinnati might be the most balanced team in the postseason, and it might have the most overall talent, too. The Bengals finished seventh in scoring offense (26.2 points per game) and second in scoring defense (17.4 points per game allowed). They feature numerous weapons on both sides of the ball.
The only real weakness for Cincinnati is the fact that starting quarterback Andy Dalton suffered a broken thumb in the team's last game against Pittsburgh. According to NFL Media's Ian Rapoport, Dalton has been ruled out, and the Bengals will start backup AJ McCarron Saturday.
The good news is that McCarron (passer rating of 97.1) has performed well in Dalton's stead. This is going to be a touch team for anyone to knock off, even with a backup under center.
Pittsburgh Steelers 10-6 (2nd in AFC North)
The Pittsburgh Steelers might be the one team that the Bengals—and any other playoff team, for that matter—wish had stayed home for the playoffs. Pittsburgh is not a particularly well-balanced team, but Ben Roethlisberger and his third-ranked passing attack (287.7 yards per game) are potent enough to scare even the best of opponents.
Unfortunately, the Steelers are also dealing with a key injury and will be without running back DeAngelo Williams. Weapons like Antonio Brown (1,834 receiving yards, 10 touchdowns) and Martavis Bryant (765 receiving yards, six scores) should be enough to keep the offense rolling, however.
Pittsburgh's biggest defensive strength is its pass rush, which produced 48 sacks in the regular season. If it can cover up for a secondary that is below average (271.9 yards per game allowed, third-most in the NFL), then the Steelers defense might not be a total liability.
The quick-strike capability of the offense, though, might make defensive football a mere afterthought.