Antonio Brown caught one long touchdown pass and scored another from a punt to earn the Steelers the AFC???s No 3 seed and a home playoff game against the Baltimore Ravens.
The 26-year-old opened the scoring with a 71-yard punt return in the first quarter and closed it with a clinching 63-yard reception that came with 2:50 left and the Steelers holding a 20-17 lead.
Brown is the only player in history to record at least five catches and 50 yards in all 16 games ??? he???s now accomplished the feat in back-to-back season.
The Green Bay Packers won their fourth straight NFC North title after a 30-20 victory over the Detroit Lions.
Aaron Rodgers threw two touchdown passes to Randall Cobb and Eddie Lacy in a rousing display for Green Bay, despite leaving the field injured late in the second quarter.
With the game tied at 14-14, Rodgers made his way back onto the field and??led the Packers on a four-minute drive??for a touchdown drive, with Cobb again converting, this time from 13 yards out.
Later, Rodgers plunged across the goal line from one yard with 8:45 left to help Green Bay regain a two-touchdown lead.
Green Bay secured the No 2 seed in the conference and a bye. Both the Packers and the Seattle Seahawks finished 12-4, with the tiebreaker being Seattle???s opening victory against Green Bay.
The Denver Broncos clinched a first-round bye in the postseason after a 47-14 victory over the Oakland Raiders.
Denver scored three of its first four drives and C.J. Anderson finished with three touchdowns for the Broncos.
Peyton Manning completed 21 of 37 passes for 273 yards, but was unable to throw any touchdowns for only the second time in his Broncos career.
The Arizona Cardinals will return to the playoffs for the first time since 2009, despite falling to the San Francisco 49ers 20-17.
Colin Kaepernick threw two touchdown passes for the 49ers on their way to victory, rushing 63 yards on seven carries.
The Cardinals will now face the NFC South champion Carolina Panthers on the road in the first round of the playoffs.
The game proved to be Jim Harbaugh???s last game in charge as the 49ers head coach after both parties agreed to part ways.
Defending Super Bowl champion Seattle Seahawks earned the top seed in the NFC by beating the St Louis Rams 20-6. The Seahawks, winners of the NFC West, were 7-1 at home at the intimidating CenturyLink Field, and have a bye next week.
The victory means the Seahawks close out the season with six straight wins.