NFL's final 4 set to face off for Super Bowl spots

Tom Brady’s Tampa Bay Buccaneers will take on Aaron Rodgers’ Green Bay Packers, as reigning champs Kansas City Chiefs go against underdog Buffalo Bills team to see who will head to Super Bowl LV.
2:34 | 01/22/21

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Transcript for NFL's final 4 set to face off for Super Bowl spots
I'm surprised you're not -- we're talking about football. You're on my turf here. I'm stepping on your toes. We'll go to the four teams hoping to make the leap to the super bowl. Tom Brady is on the brink of his tenth appearance. His first with Green Bay getting ready to face off against Aaron Rodgers and the packers and Wilma Mahomes be able to take the field against Josh Allen and the bills? T.J. Holmes is here with that. Patrick Mahomes is the face of the NFL right now. He might not be allowed to play because of rules that are meant to protect players with suspected concussions. We'll have to see. Something we will see is even something casual football fans can get excited about. Brady is going to storied Lambeau field with a chance to go to another super bowl. Brady throws. Pass caught. Evans, touchdown. Reporter: So who you got in the NFL's final four where the starting quarterbacks this Sunday include a couple of all-time greats and a couple of young'uns with all-time talent. A trip to the super bowl on the line. In one match-up Tom Brady, yes, the oldest player in the league/greatest of all time leads his Tampa bay Bucs against the presumptive league MVP Aaron Rodgers and the storied green Bay packers. I got a great offense, one of the best in the league, really talented defense, really well coached so it's how it should be. Reporter: A win and Brady would head to his tenth super bowl. He already has six rings. Rodgers has five less than that. But he did win in his only trip to the super bowl back in 2011. Obviously I put pressure on myself to perform every single week but I don't feel any extra pressure this week. For the touchdown. Reporter: In the other game this weekend the defending champ, the Kansas City chiefs face the underdog Buffalo bills led by their 24-year-old superstar quarterback Josh Allen but all eyes right now on the Kansas City quarterback, Patrick Mahomes. Absolutely dizzy. Reporter: Mahomes, the reigning super bowl MVP was knocked out of last week's game after a scary moment. This tackle left him wobbling as he tried to get to his feet. Rules required had him to immediately go into the NFL's concussion protocol. The 25-year-old was cleared to practice Thursday but has not yet been cleared by the league to play in Sunday's game. He's in the protocol so there's only certain things he can do and a limited basis. He's progressing. You know these rules are there to make sure it's not win at all costs but protect the players at all cots. For some reason I kind of feel he's going to play.

This transcript has been automatically generated and may not be 100% accurate.

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