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Wk 15 · 2026

Chicago Bears at Buffalo Bills — Sat, Dec 19

Sat, Dec 19 · Highmark Stadium, Orchard Park, NY · CBS

Weather

No forecast yet. This one is 64 days away. Forecasts reach about 16 days ahead, so this fills in nearer the game. A seasonal average printed here would look exactly like a forecast, which is why there is not one.
NFC North · 3-2
at
8:20pET
BUF -3.5 · total 51.5 DraftKings
Ratings differential BUF by 3.1
AFC East · 4-1

What is at stake

An interconference game, NFC against AFC. It counts in both overall records — which is what seeding is settled on first — and in neither team’s division or conference record.

What the ratings imply

The differential above is arithmetic on two published numbers: The Gridiron King’s 2026 final efficiency ratings, plus 1.7 points of home field. It is not a projection, a value, an edge or a lean, and nothing on this site compares it with the betting line to tell you one is better. Until 2026 games are played it is last season’s measurement of two rosters that have been through a draft and a free-agency window since.

Efficiency · 2026 ratings

Bears: +3.3#9
Efficiency margin
Bills: +4.7#4
Bears: +2.1#9
Offense
Bills: +6.0#1
Bears: +1.2#9
Defense
Bills: -1.3#23
Bears: 25.9
Points / game
Bills: 28.3
Bears: 24.4
Points allowed / game
Bills: 21.5
Opponent-adjusted ratings from The Gridiron King’s 2026 final numbers. Bars share a scale within each row, so the two lengths are comparable; the brighter side is the better of the two, and a longer bar is the better number — including the rows where a lower figure is the good one. Pace is the exception: it is how fast a team plays, not how well, so neither side is lit and a longer bar there means only more plays.

Team stats

The box-score store these rows are built from has not been produced for this league yet, so no preview carries points and yards for and against. The form, trend and series blocks below are built from this site’s own files and are not affected.

Bears form

L 7-31at GBW 23-12vs NYJW 27-7vs PHIL 3-9vs MINW 59-37at CAR
2026 season

Bills form

W 37-34at LARL 26-29vs NEW 24-16vs LACW 41-31vs DETW 36-31at HOU
2026 season

Bears this season

Straight up3-2 · 60% (5 games)
Against the spread3-2 · 60% (5 games)
Over / under1-4 · 20% (5 games)

Bills this season

Straight up4-1 · 80% (5 games)
Against the spread4-1 · 80% (5 games)
Over / under4-1 · 80% (5 games)
Lines are captured from ESPN's board before kickoff and locked at kickoff, so an in-play price cannot overwrite the number a game is graded against.

Common opponents · 6

OpponentBearsBills
Vikings
NFC
vs L 3-9 previewat Wk 9 · scheduled preview
Jets
AFC
vs W 23-12 previewat Wk 10 · scheduled preview
Packers
NFC
at L 7-31 previewat Wk 14 · scheduled preview
Patriots
AFC
vs Wk 7 · scheduled previewvs L 26-29 preview
Lions
NFC
at Wk 12 · scheduled previewvs W 41-31 preview
Dolphins
AFC
at Wk 14 · scheduled previewvs Wk 11 · scheduled preview
Open these two in the comparison tool for every shared and unshared opponent.

Series history · 2006–2026

Since 2006, Bears leads 3–2 · Bills won the last one
5 meetings in 2006–2026 · average margin 8.6 points toward Bears
Yr DateResultSiteWon
20222022-12-24Bills 35 — 13 Bearsat CHIBills
20182018-11-04Bears 41 — 9 Billsat BUFBears
20142014-09-07Bills 23 — 20 Bearsat CHIBills
20102010-11-07Bears 22 — 19 Billsat BUFBears
20062006-10-08Bills 7 — 40 Bearsat CHIBears

Bears leaders 2026 regular season

PassingCaleb Williams QB #1836/55, 407 YDS, 2 TD, 1 INT
Tyson Bagent QB #1730/43, 322 YDS, 1 INT
RushingKyle Monangai RB #2560 CAR, 324 YDS, 3 TD
D'Andre Swift RB #469 CAR, 311 YDS, 3 TD
Caleb Williams QB #1815 CAR, 107 YDS, 2 TD
ReceivingRome Odunze WR #1514 REC, 233 YDS
Kalif Raymond WR #1421 REC, 220 YDS, 1 TD
Luther Burden III WR #1019 REC, 219 YDS, 1 TD
Colston Loveland TE #8411 REC, 91 YDS
Defense
TacklesDillon Thieneman S #3130
Devin Bush LB #1219
Tyrique Stevenson CB #2918
SacksDayo Odeyingbo DE #553
Montez Sweat DE #982
Austin Booker DE #942
InterceptionsT.J. Edwards LB #531
Malik Muhammad CB #241
Dillon Thieneman S #311

Bills leaders 2026 regular season

PassingJosh Allen QB #1779/119, 1039 YDS, 6 TD, 3 INT
RushingJames Cook III RB #470 CAR, 421 YDS, 3 TD
Josh Allen QB #1733 CAR, 118 YDS, 7 TD
Ray Davis RB #72 CAR, 6 YDS
ReceivingDalton Kincaid TE #8615 REC, 270 YDS, 1 TD
Keon Coleman WR #014 REC, 217 YDS, 1 TD
DJ Moore WR #212 REC, 178 YDS, 1 TD
Khalil Shakir WR #1015 REC, 176 YDS
Defense
TacklesDorian Williams LB #4232
Terrel Bernard LB #829
Cole Bishop S #2425
SacksGreg Rousseau LB #156
Bradley Chubb LB #91.5
Deone Walker DT #961
InterceptionsC.J. Gardner-Johnson S #221
Dee Alford CB #231
These are regular-season totals for the season named on each card — the players who led that team that year, taken from ESPN's team leaders. That list is keyed to the season, not to today's roster, so a leader who has since signed elsewhere, been traded or retired still appears against the year he earned it; the roster pages and the depth chart on each team page are where the current squad is. A team switches to this season's numbers once it has played a game.