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NFL · Week 15 · 2026 Upcoming

Bears at Bills

Sun, 20 Dec 2026 · 01:20 UTC
Chicago Bears logo
Chicago
Bears
5-2 · W5
@
Buffalo Bills logo
Buffalo
Bills
5-1 · W5
Buffalo Bills to win 63% win probability · projected 22–27 · Solid

Win Probabilities

From the engine's power ratings, adjusted for home field and rest, then mapped through the margin distribution. Not a blend of the market — this is our own number.

CHI 37%
BUF 63%
Projected score
22–27
CHI at BUF
Projected margin
+4.4
home perspective
Projected total
49.0
combined points
Confidence
Solid
published before kickoff

Matchup Facts

Venue and rest come from the schedule feed and feed directly into the model; surface and weather are context we show but don't yet model.

Venue
Highmark Stadium
Roof
Outdoors
Surface
A Turf
Rest · CHI
6 days
Rest · BUF
6 days

Recent Form

Last five completed games this season, most recent first.

Chicago Bears

W vs NE 30–24
W @ ATL 31–23
L @ GB 7–31
W vs NYJ 23–12
W vs PHI 27–7

Buffalo Bills

W @ LV 33–30
W @ LAR 37–34
L vs NE 26–29
W vs LAC 24–16
W vs DET 41–31

Season Scoring

Points per game either side of the ball, 2026 season to date.

CHI · scored
25.7
per game · 7 played
CHI · allowed
20.4
per game
BUF · scored
32.8
per game · 6 played
BUF · allowed
28.5
per game

How The Model Sees It

Our rating has Buffalo Bills as the stronger side by 74 rating points, which on its own is worth about 3.0 points on the scoreboard (CHI 1,588, BUF 1,662).

Home field adds 1.4 points to BUF — a measured figure from our backtest, not the traditional three, because home advantage in the modern NFL is considerably smaller than it used to be.

That lands on a projected margin of +4.4, and running that through the historical spread of actual results against projections gives Buffalo Bills at 63%.

No betting line has been posted for this game yet — books typically price about three weeks ahead. Until one appears, this page shows the engine's number with nothing to compare it against, which is exactly the situation the model is most useful in.

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