Buffalo Bills vs Los Angeles Rams — Win Probability

Buffalo's Upset Win Over LA Flips Script on Model Projection

The Buffalo Bills were not supposed to win this game. The pregame model assigned them only a 40% win probability against the Los Angeles Rams, and projected a 3.5-point loss. The betting market agreed, favoring LA by 3.5 points. Yet Buffalo won 37–34, a 3-point victory that inverted the expected outcome entirely.

The model's expected final score was Buffalo 25.5, LA 29. The actual result—Buffalo 37, LA 34—means both teams outscored their projections significantly. Buffalo exceeded its expected total by 11.5 points. LA also beat its projection by 5 points, but not by enough to overcome Buffalo's larger differential gain.

This was a genuine upset. The expected margin favored LA by 3.5 points. The actual margin favored Buffalo by 3 points. That 6.5-point swing between projection and result measures how far the model missed on this game's fundamental outcome.

Both teams' scoring trajectories departed from forecast in the same direction—upward—which suggests the pregame model may have underestimated offensive execution or defensive breakdowns overall. However, Buffalo's larger offensive outperformance relative to projection determined the outcome flip. The Bills not only exceeded their expected total but did so by enough to overtake a Rams team that also played above its model expectations.

The result leaves Buffalo at 4–1 and LA at 2–3. For the model, this game represents a clear miss on win probability. A 40% projection for the eventual winner means the model saw the matchup as likely to go the other way. The narrow final margin (3 points) and both teams' offensive outperformance suggest execution variance, not a fundamental model error in reading the game's structure—but the outcome still belonged to Buffalo.