It was the coldest, hottest Sunday of the NFL season.
Temperatures plunged, heart rates surged, and playoff hopefuls scrapped in the bitter cold for their survival, with Pittsburgh, Green Bay and Tennessee all pulling off narrow victories on the road.
In the aftermath, shock and thaw.
Jacksonville fired coach Gus Bradley after the Jaguars blew a chance for an upset at Houston, where the Texans had benched big-money quarterback Brock Osweiler. Philadelphia, Cincinnati and Arizona were eliminated from playoff contention. And Minnesota, which stunned everyone by getting off to a 5-0 start, lost for the seventh time in nine weeks, a 34-6 blowout by Indianapolis.