College football · NFLTuesday, October 13, 2026
The Upset Report
NFL · 2023 · Week 18 · Sunday, January 7, 2024

Los Angeles Rams beat San Francisco 49ers, 21–20

The Rams closed as 5.5-point underdogs and won outright. The betting market gave them a 32% chance.

Final21–20
Upset size5.5
Chance to win32%
Rank in 202325th of 47

It was the biggest of 4 NFL upsets in 2023 Week 18, and the 25th-biggest of the 2023 season. Los Angeles Rams pulled off 1 other upset in 2023.

Other NFL upsets in 2023 Week 18

  1. 4.5-point underdog33% to winRecap
    Upset size4.5
  2. 3.5-point underdog38% to winRecap
    Upset size3.5
  3. 3.5-point underdog38% to winRecap
    Upset size3.5

Los Angeles Rams’ other 2023 upsets

  1. Week 14.5-point underdog34% to winRecap
    Upset size4.5

More: Los Angeles Rams upsets · San Francisco 49ers upsets · all Week 18 upsets · how upset size works