What to watch this weekend in sports

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There's a lot going on, so let's get right into it:

NFL playoffs

It seems that true winter weather is arriving just in time to potentially wreak havoc on the opening round. Saturday night's high-wattage matchup between Miami and defending Super Bowl champion Kansas City will be played in a barbaric minus-30 C windchill in K.C., while Pittsburgh and Buffalo could face the full Western New York trifecta of cold, wind and snow on Sunday afternoon.

Mercifully, Saturday afternoon's matchup between Cleveland and Houston and Sunday's Green Bay-Dallas and Rams-Detroit contests will be played in domes. But there's a chance of rain for the Monday nighter between Philadelphia and Tampa Bay down in Florida.

Top seeds Baltimore and San Francisco get to keep their powder dry as they enjoy first-round byes. The Ravens' biggest threats for the AFC title are No. 2 seed Buffalo, whose risk-taking superstar quarterback Josh Allen always gives his team a chance to win — or lose; and No. 3 seed Kansas City, which has an ace in the hole with Patrick Mahomes but hasn't looked the same this year amid Travis Kelce's swift decline. In the NFC, the 49ers should be most worried about No. 2 Dallas, the highest-scoring team in the league.

Hockey

With all 32 NHL teams set to play on Saturday, a pair of Canadian teams sit atop the league. Winnipeg stayed in first place overall last night by beating Chicago 2-1 for its eighth consecutive win and 31st straight game allowing three or fewer goals. Vancouver held onto second with an overtime win at Pittsburgh, its fourth victory in a row.

Edmonton