Lamar Jackson and the Ravens are a hot commodity. The Rams are struggling to make the playoffs at 6-4. The combination makes the Rams a good value play. LA has the defense, coaching smarts and offense to win this game straight-up. Oh, yes, the situation is perfect for them, too.
Jared Goff is a quarterback you don't want to touch on the road especially in cold weather. But he and the Rams offense are a different animal at home especially against a defense that doesn't apply that much quarterback heat. Goff has all his receiving weapons back, too, with deep threat Brandin Cooks expected to play. The Rams have four quality wideouts plus Todd Gurley in the backfield. 
The Rams defense is strong with Jalen Ramsey shoring up the secondary and Aaron Donald having another dominating season in the trenches. Wade Phillips is in the argument for being the top defensive coordinator in the NFL. This is a unit that can control Jackson.