GameScope NFL research

SF at KC uncertain forecast

Sun, Dec 27 at 4:25 PM ET · Arrowhead Stadium

Most likely outcome
SF wins — 55.0%
SF win
55.0%
KC win
45.0%

Expected score: SF 24.3 – KC 21.9

Total anchored to the league-wide baseline of 46.2 points — a shared baseline, not a matchup-specific forecast.

Home-field adjustment included (+65 Elo rating points)

Fair odds (display only): SF 1.82 · KC 2.22

How this forecast is calculated

Team ratings (Elo): SF 1596.3 vs KC 1496.2. 393 games trained (Oct 30).

Model: nfl-elo-v2 — Elo ratings trained on real ESPN results (2025 regular+postseason and 2026 regular season to date), chronological replay, K=20, home advantage = 65 Elo rating points, applied only at true home venues: games the feed flags neutral-site get no home bonus, in training and in prediction. Totals baseline is the mean total points of the training games (measured, not assumed). Score-model spread/total probabilities use the engine's bivariate-normal assumptions (score std 13.5, correlation 0.3) — documented approximations, not measured NFL parameters. No backtest against closing lines exists; treat all outputs as experimental uncertain forecasts.

What the win probability uses: Elo ratings only, plus a home-field adjustment of 65 Elo rating points at true home venues (no adjustment at feed-flagged neutral sites).

Contextual research (displayed, not in the calculation): Contextual research only — form, rest, injuries, head-to-head, weather, and travel do not change the win probability above.

Totals: Expected scores are centered on a shared league-wide totals baseline of 46.2 points (the mean total of the training games) — a baseline, not a matchup-specific forecast.

Score-distribution assumptions: Spread/total probabilities assume team scores are bivariate normal (score std 13.5, correlation 0.3) — documented approximations, not measured NFL parameters.

Validation status: No backtest against closing lines exists. Treat all outputs as experimental uncertain forecasts.

Data used

Form & rest contextual research

SF (6-1) — 63 days rest

Last 5: 4-1 (1 straight loss)

Oct 25, 2026ATLL20-29
Oct 19, 2026WSHW23-17
Oct 11, 2026SEAW32-29
Oct 4, 2026DENW24-14
Sep 27, 2026ARIW36-30

KC (5-1) — 62 days rest

Last 5: 4-1 (1 straight loss)

Oct 25, 2026SEAL3-20
Oct 18, 2026LACW22-6
Oct 4, 2026LVW30-27
Sep 27, 2026MIAW24-10
Sep 20, 2026INDW33-30

Head-to-head contextual research KC 1 - SF 0

Coverage: 2024-2026 regular+postseason schedules (ESPN)

DateScoreWinner
Oct 20, 2024SF 18 - KC 28KC

Injuries contextual research

Week 8 report — availability for Week 16 unknown. These designations were published for Week 8's games. They are the latest available report, kept as dated context; they do not say who will be available in Week 16.

SF

Marques SigleQuestionablequestionable
Garret WallowQuestionablequestionable
Luke GiffordQuestionablequestionable
Upton StoutQuestionableStout (shoulder) was only active as an emergency depth option during Sunday's loss to the Falcons, David Lombardi of SFStandard.com reported Monday.
Nick BosaQuestionableSan Francisco head coach Kyle Shanahan said Monday that Bosa (knee) "has a chance" to return to action Nov. 8 versus the Raiders following a Week 8 bye, David Lombardi of SFStandard.com reports.
Deebo Samuel Sr.QuestionableSamuel (hamstring) has a chance to return following the 49ers' Week 8 bye, Matt Maiocco of NBC Sports Bay Area reports.
Demarcus RobinsonInjured Reserve49ers coach Kyle Shanahan reiterated Monday that Robinson (ankle) has a chance to return following the team's Week 8 bye, David Lombardi of SFStandard.com reports.
De'Zhaun StriblingInjured ReserveStribling (ankle) remains on track to return in December, David Lombardi of SFStandard.com reports.
Mike EvansQuestionableEvans (Achilles) is expected to return after San Francisco's Week 8 bye, David Lombardi of SF Standard reports.
Christian McCaffreyQuestionableMcCaffrey is dealing with a mild hamstring strain rather than a quadriceps injury, and the 49ers believe he'll be ready following the team's Week 8 bye, David Lombardi of SF Standard reports.
Show all 25 (15 more)
Dre GreenlawActiveGreenlaw posted 12 tackles (four solo) in Sunday's loss to the Falcons.
Fred WarnerActiveWarner recorded 13 tackles (six solo) Sunday in a Week 7 loss to Atlanta.
Christian KirkActiveKirk played 20 snaps on offense but didn't show up in the box score otherwise during Sunday's 29-20 loss to Atlanta.
Brandin CooksActiveCooks caught one of three targets for 13 yards during Sunday's 29-20 loss to Atlanta.
Jacob CowingActiveCowing caught three of five passes for 38 yards, added a 10-yard carry and returned one kickoff for 28 yards during Sunday's 29-20 loss to the Falcons.
Jordan JamesActiveJames logged a six-yard carry, turned his lone target into an 11-yard catch and registered 119 yards on four kickoff returns during the 49ers' 29-20 loss to the Falcons on Sunday.
Kurtis RourkeActive
Brock PurdyActivePurdy completed 27 of 40 passes for 288 yards with one touchdown and two interceptions and added two carries for five yards in the 49ers' 29-20 loss to the Falcons on Sunday.
Kyle JuszczykActiveJuszczyk caught all three of his targets for 11 yards and a touchdown during Sunday's 29-20 loss to Atlanta.
Eddy PineiroActivePineiro did not attempt a field goal while going 2-for-3 on PATs in Sunday's 26-20 loss to the Falcons.
Jordan WatkinsActiveWatkins brought in three of six targets for 56 yards in the 49ers' 29-20 loss to the Falcons on Sunday.
Kaelon BlackActiveBlack rushed 12 times for 63 yards and a touchdown and brought in one of three targets for minus-4 yards in the 49ers' 29-20 loss to the Falcons on Sunday. He also lost a fumble and returned one kickoff for 34 yards.
George KittleActiveKittle brought in eight of 10 targets for 88 yards and lost a fumble in the 49ers' 29-20 loss to the Falcons on Sunday.
Siran NealActive
Mykel WilliamsActiveWilliams (knee) does not have any injury designation ahead of Sunday's game against the Falcons.

KC

Mansoor DelaneQuestionableDelane (shoulder) did not practice Thursday.
Rashee RiceQuestionableRice (hamstring/knee) remained a limited participant at Thursday's practice.
Travis KelceQuestionableKelce (ankle) was listed as a limited participant in Thursday's practice.
Jaylon MooreQuestionableMoore (concussion) was a full participant in Wednesday's practice.
Omarr Norman-LottOutThe Chiefs designated Norman-Lott (knee) to return from injured reserve Wednesday.
L'Jarius SneedQuestionablequestionable
Brashard SmithInjured ReserveThe Chiefs placed Smith (hamstring) on injured reserve Saturday.
Show all 25 (18 more)
Cyrus AllenActiveChiefs head coach Andy Reid said Wednesday that Allen will "get a little bit more [snaps]" during Sunday's game against the Broncos, Nate Taylor of ESPN.com reports.
Harrison ButkerActiveHead coach Andy Reid said Wednesday that Butker will "probably" serve as the Chiefs' kicker in Sunday's game against the Broncos, Sam McDowell of The Kansas City Star reports.
Chamarri ConnerActiveConner finished Sunday's 20-3 loss to Seattle with seven tackles (two solo).
Nohl WilliamsActiveWilliams finished Sunday's 20-3 loss to the Seahawks with 10 tackles (four solo) and one interception.
Nick BoltonActiveBolton registered 11 tackles (six solo) during the Chiefs' 20-3 loss to the Seahawks on Sunday.
Drue TranquillActiveTranquill finished Sunday's 20-3 loss to the Seahawks with 12 tackles (four solo).
Andrew ArmstrongActiveArmstrong caught one of two targets for three yards during Sunday night's 20-3 loss to Seattle.
Noah GrayActiveGray caught three passes on as many targets for 44 yards during Sunday's 20-3 loss to the Seahawks.
Emmett JohnsonActiveJohnson caught two of three passes for 17 yards and returned three kickoffs for 81 yards during Sunday's 20-3 loss to the Seahawks. He also added two tackles on special teams.
Ben VanSumerenActive
Jack PyburnActive
Jadon CanadyActive
Xavier WorthyActiveWorthy caught three of six targets for 11 yards in Sunday's 20-3 loss to the Seahawks.
Patrick MahomesActiveMahomes completed 19 of 33 passes for 165 yards, no touchdowns and one interception in Sunday's 20-3 loss to the Seahawks. He added two rushing attempts for 14 yards.
Kenneth Walker IIIActiveWalker rushed 14 times for 36 yards while catching four of five targets for 21 yards in Sunday's 20-3 loss to the Seahawks.
Garrett NussmeierActiveNussmeier (coach's decision) is inactive as the emergency third quarterback for Sunday night's game against the Seahawks.
Cooper McDonaldActiveThe Chiefs activated McDonald (knee) from injured reserve Saturday.
Jaydn OttActiveThe Chiefs signed Ott from the practice squad to the active roster Saturday.

Labels: Out = confirmed unavailable; Doubtful = projected unavailable; Questionable = projected uncertain.

Weather & travel contextual research

48.7°F, wind 3.4 mph, precip — mm (next 1h),
Forecast for Sun, Nov 8 at 7:00 PM ET (updated Oct 30). Weather data: MET Norway (api.met.no), CC BY 4.0 / NLOD 2.0

Travel (SF): ~1,491 miles, 2h time-zone shift east

Research only — not betting advice. All probabilities are uncertain forecasts from a simple model, never guarantees or 'locks'. GameScope places no wagers.
Scores/records/injuries: ESPN unofficial API (live). Weather: MET Norway.