Week 15 predictions

Chicago Bears at Buffalo Bills

Game data updated 26 min ago · this page re-reads every 10 min while open

Week 15, 2026 · Sunday, Dec 20, 1:20 AM · outdoors

Chicago Bears
1–0 · Elo 1557 · Caleb Williams
Elo: BUF 63%Spread: BUF 60%
Buffalo Bills
2–0 · Elo 1612 · Josh Allen · Home

What the forecasters say

ForecasterFavorsBUFCHINote
EloBUF 63%63%37%BUF 1612 vs CHI 1557, implied spread BUF −3.8
Closing spreadBUF 60%60%40%BUF -3.5
The blendBUF 63%63%37%

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The spot: Tight agreement

Elo and the market agree on the favorite within 4 points. Over 24 seasons (2,312 games) favorites here won 69.2% against a 67.7% forecast; in 2023–25 it ran hotter, 74% against 66%. Lean a little toward the favorite. The blend adds 2 points.

Buffalo Bills over the Bears: Elo 63%, market 60%. Tight agreement: go above both.

Details

Line movement

No market has priced this game yet. Kalshi and Polymarket usually list games about a week out; sportsbooks earlier.