Thursday 21 January 2016 13:47, UK
Ahead of the AFC and NFC Championship games, Osi Umenyiora answers key questions about the four remaining teams.
Tom Brady will lead the New England Patriots against fellow star quarterback Peyton Manning and the Denver Broncos this Sunday, live on Sky Sports.
Our coverage continues with Carolina Panthers playing host to the Arizona Cardinals, which features another quarterback duel between home-favourite Cam Newton and the visiting Carson Palmer.
Umenyiora picks out five key points from these two crucial games...
What a match-up we have here as two of the greatest quarterbacks in the history of the NFL go head-to-head this weekend.
Brady is a clutch performer; very, very smart. He has good accuracy, good arm strength, can make all the throws on the football field. This is a special, special football player. One of the best quarterbacks in NFL history.
Manning is really smart, he studies the game, he knows all the ins and out. He knows what the defence is going to do, before they even do it. This is the type of football player that he is.
He is going to make all the checks, know exactly what offence to get his team into. He is also a very special football player.
Very crucial, because Edelman is a very smart receiver, very shifty, who knows how to run all the routes on the football field and, most importantly, Tom Brady trusts him. He knows what he's going to do.
This is one of the new breed of quarterbacks in the NFL. He is one of the guys who can beat you with his arm as well as his legs and he's extremely difficult to stop because of that combination.
This is the MVP of the league right there. This guy has done everything for the Carolina Panthers this year. There is nobody who has been more important to their team than Cam Newton.
I think he's going to be key, but I don't think he's going to be the key to victory for Arizona. I think the Carolina Panthers are known for having a great defence. They are going to try to take him out of the game.
I think the key will be Carson Palmer finding the other guys, Michael Floyd, John Brown, and the running game of the Cardinals. I think that will be crucial in this game.
With 12 consecutive wins at home, the Panthers obviously have a huge advantage there. I've played in that stadium before and it's a very difficult place to play.
They are loud, they get crazy over there. It's difficult, you can't listen, you cannot hear anything.
Osi's picks: Denver Broncos and Carolina Panthers
