Who will reach the NFL's final 4?

This is an excerpt from The Buzzer, which is CBC Sports' daily email newsletter. Stay up to speed on what's happening in sports by subscribing here .

Coming off a wildly unpredictable regular season, the NFL kept the thrills coming in the opening round of the playoffs last weekend.

On Saturday, the heavily favoured Los Angeles Rams needed a last-minute touchdown to beat Carolina, and the Chicago Bears rallied from an 18-point fourth-quarter deficit to stun rival Green Bay. On Sunday afternoon, reigning MVP Josh Allen overcame injuries to seemingly every part of his body to lead Buffalo past Jacksonville before San Francisco eliminated Super Bowl champion Philadelphia. The action finally cooled down on Sunday night as New England won a rock fight against the L.A. Chargers, and then Houston smothered Pittsburgh on Monday night to end Mike Tomlin's 19-year tenure as the Steelers' head coach.

Meanwhile, the top-seeded Denver Broncos and Seattle Seahawks sat back and enjoyed the bye week they earned by finishing first in their respective conferences. But the AFC and NFC champs rejoin the fray this weekend, when we'll find out the final four contestants for a trip to Super Bowl LX in the San Francisco Bay Area.

Here's a quick look at each second-round matchup:

Saturday at 4:30 p.m. ET:

Already dealing with a bad foot, Josh Allen is now listed with three injuries after banging up his throwing hand and getting his left knee wrenched during Sunday's 27-24 win over Jacksonville. Plus, his comically inept receiving corps is even thinner after Gabe Davis and Tyrell Shavers both tore an ACL against the Jags. Allen, who ran for two touchdowns and threw for another last week, may need to summon another superhuman performance