The 2022 NFL playoffs are down to four teams ahead of Sunday's AFC Championship Game and NFC Championship Game. Fantasy owners participating in postseason formats are in their second-to-last opportunity to get their fix this season. Those who are still playing have a bevy of star players to slot in their Fantasy football rankings like Patrick Mahomes, Joe Burrow, Tyreek Hill, Travis Kelce, and Cooper Kupp. Three of the top 10 offenses in points per game are still alive, but which Fantasy football matchups should you target?

Should you bank on stars like Kupp and Hill or try to hit on Fantasy football sleepers like Tee Higgins and Odell Beckham Jr.? Before locking in in your Fantasy football lineups for the NFC and AFC Championship Games, be sure to check out the playoff Fantasy football rankings from the proven computer model at SportsLine.

When it comes to ranking players, SportsLine's model beat human experts in Fantasy football for the past several seasons especially when there were big differences in ranking. Over the course of a season, that could literally be the difference between winning your league or going home empty-handed.

Last week, the model was extremely high on Bills quarterback Josh Allen, ranking him as the top player at his position. The result: Allen threw for 329 yards and four touchdowns while also rushing for 68 yards. Anybody who had him in their lineup was well on their way to a huge week.

Now, the model, which simulates every NFL game 10,000 times, has revealed its 2022 NFL championship round Fantasy football rankings. Head to SportsLine now to see them.

Top 2022 NFL Playoffs Fantasy football picks 

One player the model is high on this week: Rams quarterback Matthew Stafford. He has been a Fantasy monster in his first season outside of Detroit. While he'll face an excellent San Francisco 49ers defense, Stafford has enough weapons at his disposal to emerge as one of the top Fantasy performers this week.

Stafford had 366 yards and two passing touchdowns last week against the Tampa Bay Buccaneers in the divisional round and added a rushing touchdown. He might not be able to reach those numbers against a 49ers defense that just limited Aaron Rodgers to 225 yards through the air, but SportsLine's model still has him as the No. 2 Fantasy quarterback for the week.

And a massive shocker: Rams wide receiver Odell Beckham Jr. stumbles big-time and doesn't even crack the top five at his position. Beckham finished with six catches for 69 yards in Los Angeles' 30-27 victory over the Buccaneers. While he didn't find the end zone against Tampa Bay, Beckham has become an important piece in Los Angeles' red zone offense. In fact, Beckham has scored a touchdown in six of his last nine games. 

However, Beckham was held in check the last time the Rams squared off against the 49ers. San Francisco's defense limited him to just two receptions for 18 yards in the 49ers' 27-24 victory on Jan. 9. With such a tough matchup on Sunday, Beckham is a player to consider putting on the bench.

How to set 2022 NFL championship round Fantasy football rankings

The model is also calling for an under-the-radar wide receiver to finish in the top six of its Fantasy football rankings, ahead of wideouts like Odell Beckham Jr. and Tyler Boyd. This pick could be the difference between winning big and going home with nothing. You can only see who it is here.

So who should you start and sit this week? And which surprising wide receiver could lead you to victory? Visit SportsLine now to get NFL playoff Fantasy football rankings for every position, plus see which WR is going to come out of nowhere to crack the top 10, all from the model that has out-performed experts big-time.