Los Angeles Chargers vs Kansas City Chiefs — Win Probability

Chiefs' 16-point win over Chargers exceeded model projection by 8.5 points

Kansas City's 22–6 victory over Los Angeles was not an upset—the model favored the Chiefs at 72% win probability pregame, matching the market's 7.5-point spread. But the actual result significantly outpaced the projection.

The model expected Kansas City to win by 7.5 points on a score of 24.5–17. The Chiefs instead won by 16, scoring 22 while holding the Chargers to 6. That 8.5-point margin gap between expected (7.5) and actual (16) represents a decisive underestimation of Kansas City's dominance.

The gap breaks down as follows: Kansas City scored 2.5 points below its projection (24.5 expected, 22 actual), while Los Angeles scored 11 points below its projection (17 expected, 6 actual). The Chargers' shortfall accounted for most of the model miss. The Chiefs' defense performed substantially better than the projection implied, and their offense was only marginally less productive than forecast.

This was not a close call that could be attributed to variance. An 8.5-point gap in a game where the favorite was heavily projected means the model underweighted either Kansas City's edge or Los Angeles's weakness. The actual performance—a 72% favorite winning by 16 instead of the projected 7.5—sits well outside typical simulation noise.

The result aligns with the pre-game direction (Kansas City did win, and did so comfortably), but the magnitude of the victory outdistanced what the pregame numbers suggested. For a model brand built on factual precision, this represents a clear miss on the size of the outcome, even though the winner was correctly identified.