NFL playoffs: Chiefs crush Steelers as 49ers and Bucs also progress

• Pittsburgh Steelers 21-42 Kansas City Chiefs
• San Francisco 49ers 23-17 Dallas Cowboys
• Philadelphia Eagles 15-31 Tampa Bay Buccaneers
• Philly's Josh Sweat inactive after life-threatening situation'

Patrick Mahomes threw for 404 yards and five touchdowns, Travis Kelce caught a TD pass and threw another one, and the Kansas City Chiefs sent Pittsburgh quarterback Ben Roethlisberger into his anticipated retirement with a 42-21 blowout of the Steelers in the wildcard round of the playoffs on Sunday night.

Byron Pringle caught touchdown passes from both Mahomes and Kelce, and Jerick McKinnon and Tyreek Hill also reeled in scoring catches as the Chiefs began their pursuit of a third straight AFC championship in fine style. They scored on six straight possessions during the middle part of the game, shut down Roethlisberger and the rest of the Pittsburgh offense, and turned next Sunday night's divisional-round game against Buffalo into appointment viewing. The Bills had a similarly easy time with their 47-17 victory over New England on Saturday. Buffalo and Kansas City met for the AFC title last season.