Detroit Lions vs Buffalo Bills — Win Probability

Buffalo's Win Margin Exceeded Model Projection by 4.5 Points

Buffalo defeated Detroit 41-31 on Sunday, a 10-point victory that was larger than both the model's pregame expectation and the betting market's consensus.

Pre-kickoff, the Matrix model projected Buffalo to win by 5.5 points, with an expected final score of 30-24.5. The market line agreed exactly—Buffalo favored by 5.5. The model assigned Buffalo a 66% win probability, indicating a meaningful but not overwhelming edge.

The actual result: Buffalo 41, Detroit 31. The Bills' 10-point margin exceeded the model's projection by 4.5 points. The Bills also significantly outscored their expected output (41 vs. 30 projected), while Detroit fell short of its projection (31 vs. 24.5 expected). Both offenses performed better than anticipated, but Buffalo's outperformance was larger in absolute terms.

This was not an upset—Buffalo was the pregame favorite and won as expected. However, the magnitude of the victory was larger than modeled. The game followed the correct directional call but missed the final gap by a notable margin. In weekly projection terms, this represents moderate variance: the model identified the right winner and assigned appropriate confidence (66%), but underestimated both the pace and efficiency of the offensive output.

The 4.5-point overrun of the projected margin suggests the game played out more decisively than the model's simulation anticipated. Whether this reflects Buffalo's actual superiority being greater than the pregame read, Detroit's performance declining from projection, or both, the numbers show a clean Buffalo win that went beyond what the analytics framework expected. Buffalo improved to 2-0; Detroit fell to 1-1.