New Orleans Saints vs Detroit Lions — Win Probability

Detroit's 1-Point Win Over New Orleans Tests Model's 7-Point Projection

Detroit's pregame model projection called for a 7-point victory over New Orleans, built on an expected final score of 28.3–21.2 in the Lions' favor. The market agreed on the direction—Detroit was the favorite—and priced the spread at exactly 7 points. What actually happened was far tighter.

The Lions won 31–30, a margin of just 1 point. That means the model's expected margin missed the actual result by 6 points. Detroit did score higher than projected at 31, exceeding the 28.3 forecast by 2.7 points. New Orleans, however, scored 30—nine points more than the model's pregame expectation of 21.2. The Saints' offensive output was the primary driver of the gap between projection and result.

This was not an upset. Detroit won as projected, and the market's 7-point line matched the model's expectation precisely. The miss was in execution and margin size, not in identifying the winner. The Lions covered the spread, but only by one point, whereas the model had suggested a more convincing victory.

The game represents a moderate miss for the projection: 6 points on a 7-point spread is meaningful enough to flag, but not so large as to suggest a fundamental misread of team strength or matchup dynamics. Detroit's higher-than-expected output and New Orleans' much-higher-than-expected output—nearly 50% above the 21.2 floor—made this a closer game than either the model or the market anticipated. Both sides showed more offensive capability than pregame analysis credited, compressing what looked like a comfortable margin into a one-score result.