On Sunday, the Los Angeles Rams (12-5) will host the San Francisco 49ers (10-7) in the 2022 NFC Championship Game with a trip to Super Bowl LVI on the line. Los Angeles is favored by 3.5 points in the latest 49ers vs. Rams odds from Caesars Sportsbook, while the over-under is 45.5.

Before you make 49ers vs. Rams or any other NFL predictions, you NEED to see which side SportsLine expert Larry Hartstein is on. A former lead writer for Covers and The Linemakers, Hartstein combines a vast network of Vegas sources with an analytical approach he honed while working for Pro Football Focus. This season, he has been on fire. Hartstein is 73-48 in his last 121 NFL sides, for a profit of more than $1800. 

In addition, Hartstein has gone an astounding 28-17 in his last 45 picks involving Los Angeles, returning $800 to $100 bettors! Anyone who has followed him is WAY UP. 

Los Angeles quarterback Matthew Stafford had a strong season in his first year under center for the Rams. He finished the season third in passing (4,886), second in passing touchdowns (41), and fourth in QBR (63.8). The Georgia product has silenced his doubters thus far and picked up back-to-back postseason victories. In the last-second win over the Tampa Bay Buccaneers in the divisional round, Stafford went 28-of-38 for 366 yards and two passing touchdowns. 

San Francisco's defense limited two high-powered offenses in both of its postseason victories. The Niners held the Dallas Cowboys and Green Bay Packers to fewer than 20 points and fewer than 310 total yards of offense. The 49ers have also gotten after the quarterback, logging 10 sacks through two games. Defensive end Arik Armstead has already recorded three sacks, while defensive end Nick Bosa is right behind him with 2.5 this postseason. 

We can tell you Hartstein is leaning under on the point total. He also has discovered a critical X-factor that has him jumping ALL OVER one side of the spread. You ABSOLUTELY need to see what it is before locking in any Rams vs. 49ers picks. 

Who wins 49ers vs. Rams in the NFL playoffs 2022? And what critical X-factor makes one side of the spread a MUST-BACK? ... Join SportsLine right now to see which side of the 49ers vs. Rams spread to jump on Sunday, all from the expert who's an outstanding 28-17 on NFL picks involving the Rams!