BALTIMORE—When the Los Angeles Rams look back on this important victory, they might recall how Matthew Stafford helped put the team in a quandary with three costly turnovers. They most certainly won’t forget how the gritty quarterback made amends by overseeing a near-flawless fourth-quarter comeback that produced in a 20-19 win Sunday over the short-handed but stubborn Baltimore Ravens. Stafford threw a 7-yard touchdown pass to Odell Beckham Jr. with 57 seconds left immediately after completing a 5-yarder to Beckham on a fourth-and-5. Although Los Angeles (12-4) failed on a 2-point conversion, the Ravens—playing a third straight game without injured quarterback Lamar Jackson — never got close enough for a field-goal try. The Rams’ fifth straight victory pushed them to the cusp of their second straight NFC West title. Arizona needed to beat Dallas later Sunday to avoid elimination. Facing a depleted defense that was coming off a humbling performance …