The Buffalo Bills capitalized on a turnover to take a quick 9-0 lead over the Kansas City Chiefs in the A.F.C. championship game. But things are tight in the second quarter after Patrick Mahomes threw a touchdown pass to Mecole Hardman. The Chiefs are attempting to return to the Super Bowl after winning it last season and the Bills are seeking their first Super Bowl berth in more than a quarter-century.
The winner will play the Tampa Bay Buccaneers, who held off the top-seeded Green Bay Packers to win the N.F.C. championship game, 31-26. The Buccaneers will be the first team to play a Super Bowl in their home stadium, on Feb.