49ers’ 5 keys to upsetting No. 1 seed Seattle in NFC divisional playoffs

SEATTLE – The smoke literally cleared two weeks ago from Levi’s Stadium’s visitors’ locker room, which the Seattle Seahawks turned into a victory-cigar lounge after a 13-3 win that clinched the NFC playoffs’ No. 1 seed and NFC West title.

The 49ers could do the same tonight with an upset at Lumen Field. However, as one 49ers defender said, “We’re classier than that.”

Beating the Seahawks here, as they did in the season opener, would send the No. 6-seeded 49ers to the NFC Championship Game...