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DYNATYZE
DYNATYZE
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Game Center
polling · 1800s tick · as of 8:18 AM ET · 15 to play · 1 final
Buffalo Bills 30, Chiefs 21 — with the result never quite settled.
It turned at Q4 2:27, 4th and 2, on Josh Allen — 14.1 win-probability points to the Bills on one snap, the largest move of the game.
The snaps that bent it
Bills closed -2.5 and covered, winning by 9.
Buffalo Bills 30–21. Biggest swing: Q4 2:27, Bills +14.1% win probability on one snap.
The biggest swing of the game · Q4 2:27 · 4th and 2
Josh Allen
Bills
(2:27) (Shotgun) 17-J.Allen scrambles right tackle for 26 yards, TOUCHDOWN. ** Injury Update: BUF-73-D.Dawkins has returned to the game.
14.1
win-probability points on one snap
The largest move of the game. The two below are drawn against it.
Chamarri ConnerChiefsQ2 7:38(7:38) (Shotgun) 17-J.Allen pass short right intended for 88-D.Knox INTERCEPTED by 27-C.Conner at KC 31. 27-C.Conner to BUF 40 for 29 yards (74-R.Van Demark).
9.7pts
Noah GrayChiefsQ2 2:53(2:53) (Shotgun) 15-P.Mahomes pass short middle to 83-N.Gray for 2 yards, TOUCHDOWN.
9.8pts
What separated them
Explosive plays
Bills won this one — 6 chunk plays, against Chiefs at 2 chunk plays.
Billsthe gap went the way the scoreboard did
Red zone
Chiefs owned this one and still lost it — 3 touchdowns on 3 trips, against Bills at 3 touchdowns on 5 trips.
Chiefsthe gap went the other way from the scoreboard
Staying on schedule
Chiefs owned this one and still lost it — 52% of snaps stayed on schedule, against Bills at 43% of snaps stayed on schedule.
Chiefsthe gap went the other way from the scoreboard
Giveaways
Bills won this one — 1 giveaway, against Chiefs at 2 giveaways.
2 other measures were inside a third of the league's own spread — two clubs doing the same thing, so they are not shown.
Drawn from the weekly play-by-play file, which paints on the Monday 4:00 AM ET sync after the game.
The model against the market, the momentum underneath, every drive — scrub to replay it
How the game was won
The model and the market were 1.8 win-probability points apart on the average play, and 7 apart at the widest — with the model the more convinced about Bills.
MarketModelmodel higher on Billshigher on Chiefs156 of 165 plays carry both curves
(2:27) (Shotgun) 17-J.Allen scrambles right tackle for 26 yards, TOUCHDOWN. ** Injury Update: BUF-73-D.Dawkins has returned to the game.
Swing +14.1 for BillsExpected points +4.94 for BillsModel and market agree here.play 153
The solid line is the betting market's home win probability; the dashed line is the play-by-play model's. The shaded band between them is the disagreement — emerald where the model liked the home team more, red where it liked the away team more. Drag across the curve or use arrow keys to replay the game; gold diamonds mark the biggest swings.
Highest-leverage plays
4th · 2:27BUF +14% win prob(2:27) (Shotgun) 17-J.Allen scrambles right tackle for 26 yards, TOUCHDOWN. ** Injury Update: BUF-73-D.Dawkins has returned to the game.
2nd · 2:53BUF +10% win prob(2:53) (Shotgun) 15-P.Mahomes pass short middle to 83-N.Gray for 2 yards, TOUCHDOWN.
2nd · 7:38KC +10% win prob(7:38) (Shotgun) 17-J.Allen pass short right intended for 88-D.Knox INTERCEPTED by 27-C.Conner at KC 31. 27-C.Conner to BUF 40 for 29 yards (74-R.Van Demark).
2nd · 15:00BUF +9% win prob(15:00) (Shotgun) 15-P.Mahomes pass short right to 1-X.Worthy for 10 yards, TOUCHDOWN. Caught in flat at BUF 10.
1st · 14:23KC +9% win prob(14:23) (Shotgun) 15-P.Mahomes pass deep right intended for 83-N.Gray INTERCEPTED by 9-T.Rapp [92-Da.Jones] at BUF 45. 9-T.Rapp to 50 for 5 yards (9-J.Smith-Schuster). PENALTY on BUF-57-A.Epenesa, Unnecessary Roughness, 15 yards, enforced at 50.
2nd · 0:16KC +8% win prob(:16) (Shotgun) 17-J.Allen pass short left to 10-K.Shakir to KC 15 for -1 yards (27-C.Conner).
SettledThe modelled figures are the league play-by-play model's, not ours.
How the points landed
The margin ledger
Tyler Bass's 33-yard field goal with 0:05 left in the 2nd put Buffalo Bills ahead for good. The lead never changed over the 3 scores that followed.
Lead
1st10:04James Cook·3-yd TD run3-yard rushing touchdownkick no good, wide right+60–6
2nd15:00Xavier Worthy·10-yd TD catch10-yard touchdown catchfrom Patrick Mahomesfrom Patrick Mahomes+77–6
Bills ahead 7–1 on categories, including the biggest gap of the duel — sacks taken.
Expected points added, per play
The centre line is an average play. A bar to the right of it is a side that gained more than the situation was worth; a bar to the left is a side that lost ground. All six bars share one scale, ±0.35 points.
Every snapexpected points added per play, all downs
+0.12Chiefs: +0.12 expected points added per play
+0.10Bills: +0.10 expected points added per play
Dropping backexpected points added per dropback
+0.16Chiefs: +0.16 expected points added per play
+0.23Bills: +0.23 expected points added per play
Running itexpected points added per rush
+0.03Chiefs: +0.03 expected points added per play
−0.12Bills: −0.12 expected points added per play
Neither side “wins” volume or play-calling mix, so neither is drawn as a duel: Chiefs ran 52 snaps at a 67% dropback rate against Bills’s 69 at 65%. Red-zone trips: Chiefs 3, Bills 5.
Derived from the play-by-play, no model
The Read
10 of 11 readings cleared their snap floor and were tested against four comparisons: this week's whole slate, the team's own season, the week before, and the team's own ordinary spread. Every bar below is set in that team's own week-to-week swing, never in league points — one team's swing runs 1.6 to 3.1 times the entire league's spread.
Too few to read
1 of 11 readings cleared their snap floor in this game, which is under the three this column needs before it will draw the rule. The readings themselves stand.
high through week 11Against their seasonTendencies
KC's play-action rate, 28.6%, is past their previous high of 26.2% in week 3 — the highest of their 10 charted games through week 11.
35 dropbacks this game, floor 12 — 17 of their games behind the ruler, and their own week-to-week swing is 5.5 points. · +1.3σ from their own normal
The season-grain rooms, pointed at this one game
Was this normal for them?
10 of 12 readings cleared their snap floor. Every deviation below is measured in that team's own game-to-game swing, not in league points — because one game's swing runs from 1.6 to 3.1 times the whole league's spread.
their week-to-week swingall 32 teams
upper band = their week-to-week swing · lower rule = all 32 teams · scale -23 pts to 23 pts
inside their normal wobble · −8.9 vs their 17.8%, and they swing ±9.8 week to week (−0.91× that swing) · 45 dropbacks
Bills20.0%
leaned — got home · +5.1 vs their 14.9%, and they swing ±4.1 week to week (+1.24× that swing) · 35 dropbacks
NoteKC's play-action rate was the night's one real departure: 28.6%, 7.3 points above their season mean of 21.3% and 1.3 times their own 5.5-point weekly swing.
The Game Day Roster
Who was out, who dressed and never took a snap, and who was on the field how much. Game-day list and snap counts from the weekly roster and snap feeds. Practice-squad and injured-reserve players are not shown — they were never on the game-day list.
1 player played under 8 snaps, so their shares read as a dash rather than a number.
Expected points are modelled in full PPR, so the “vs expected” column stays in that unit whichever format the pills are set to. Switching the pills changes the points column, not the plane.
The field map
Every snap, where it happened
The whole game as one hundred yards. The Bills attack right, the Chiefs attack left, so a change of possession is a reversal you can see. Reading down is the order the snaps were played — not the clock, so a two-minute drill gets the same room as any other fourteen snaps. This game is final.
Chiefs←Bills→
Q1Q2Q3Q4
J.Allen scrambles+14% win probabilitymoment 4 of 4
(2:27) (Shotgun) 17-J.Allen scrambles right tackle for 26 yards, TOUCHDOWN. ** Injury Update: BUF-73-D.Dawkins has returned to the game.
Q4 2:27 · Bills · 4th & 2 at KC 26 · gained 26 · +4.94 EP · +13.9% win probability
154 snaps placed · 11 without a recorded yard line, left off the map · 4 marked moments — the largest win-probability swings, one per drive.
The Film Room · post-game
Post-game film: 165 plays across 19 drives, personnel groupings on 154 snaps, the eleven on the field by name, manual charting on 160. Everything here paints once the weekly sync ingests the game — there is no live play-level feed in this product, so nothing on this page updates while a game is being played.
Possession by possession
The field rail
8 of 19 drives ended in points. The longest march was KC moving 88 yards from the KC 12 for a touchdown. Each bar is the ground a drive actually covered; BUF attacks right, KC attacks left. Hatching marks a trip inside the twenty.
Every snap
Play stream
165 of 165 plays
Team
Quarter
Down
Play type
Expected points added
Event
Charted
Plays shown
165
EPA per play
+0.09
Success rate
48%
Yards
625
Who was on the field
Personnel groupings
Offensive grouping on every pass and run. A group needs five snaps in this game before it gets a number — under that the sample is a coin flip and the cell reads a dash instead. Open any play above to see the eleven men who were actually on the field for it.
Bills1 RB, 1 TE, 3 WR47+0.2966%
Chiefs1 RB, 2 TE, 2 WR24+0.0575%
Chiefs1 RB, 1 TE, 3 WR17+0.1476%
Bills1 RB, 3 TE, 1 WR8-0.2838%
Bills2 RB, 2 TE, 1 WR5-0.4120%
Chiefs1 RB, 3 TE, 1 WR5+0.1620%
Chiefs2 RB, 1 TE, 1 WR4——
Bills2 RB, 1 TE, 2 WR3——
Bills1 RB, 2 TE, 2 WR2——
Bills1 RB, 2 TE, 1 WR2——
Chiefs0 RB, 2 TE, 3 WR2——
Bills1 RB, 1 TE, 2 WR1——
Bills2 RB, 1 TE, 1 WR1——
snapsepapass rate
165 plays · ranked by the win probability each one moved
Every play
Ball
When
Play
Only
Who
165 plays
Bar length is win probability the play moved
1st quarter37 plays
Intercepted3 plays, from the Chiefs 30 to the Chiefs 37
Chiefs0Bills6
Touchdown9 plays, from the Bills 35 to the Chiefs 3
Punt5 plays, from the Chiefs 30 to the Chiefs 35
Punt8 plays, from the Bills 40 to the Chiefs 42
The period ended11 plays, from the Chiefs 12 to the Bills 24
2nd quarter50 plays
Chiefs6Bills6
Chiefs7Bills6
Touchdown2 plays
Chiefs7Bills12
Chiefs7Bills13
Touchdown12 plays, from the Bills 30 to the Chiefs 6
Punt5 plays
Intercepted4 plays, from the Chiefs 41 to the Chiefs 34
Chiefs13Bills13
Chiefs14Bills13
Touchdown11 plays, from the Bills 40 to the Bills 2
Chiefs14Bills16
Field goal15 plays, from the Bills 23 to the Chiefs 14
3rd quarter33 plays
Punt5 plays, from the Bills 30 to the Bills 33
Punt5 plays, from the Chiefs 20 to the Chiefs 29
Punt7 plays, from the Bills 33 to midfield
Punt8 plays, from the Chiefs 14 to the Chiefs 49
The period ended8 plays, from the Bills 17 to the Chiefs 49
4th quarter45 plays
Chiefs14Bills22
Chiefs14Bills23
Touchdown5 plays, from the Chiefs 27 to the Chiefs 12
Chiefs20Bills23
Chiefs21Bills23
Touchdown13 plays, from the Chiefs 30 to the Bills 1
How the play was built
Two in the backfield, a man in motion.
From outside the pocket.
FormationShotgunOffense on the fieldOne quarterback, one back, one tight end and three receiversDefense on the fieldFour linemen, three linebackers and four backsCoverageCover 3, three deepMan or zoneZoneIn the boxSix defendersRushing the passerFourPressure (charted)The passer was pressured
Chiefs21Bills29
Chiefs21Bills30
Touchdown16 plays, from the Bills 30 to the Chiefs 26
Intercepted8 plays, from the Chiefs 30 to the Chiefs 48
The period ended3 plays
Win probability is the league play-by-play model, 98.5% of plays · a dash means none was published
The cards are drawn from the play-by-play sync, not live, and each one says so on its face.
Closing number vs result
Betting context
Closing spread
Bills -2.5
Closing total
46.5
Chiefs moneyline
+120
Bills moneyline
-142
Bills closed -2.5 and covered, winning by 9.
Total closed 46.5; the game landed 51 — over by 4.5.
Conditions and crew
Game environment
Venue
New Era Field
Roof / surface
outdoors · a turf
Kickoff weather
Cool, 52°F at kickoff; still at 5 mph out of the south-west; overcast.
Referee
Land Clark
Rest
Chiefs 7 days · Bills 7 days
Coaches
Andy Reid vs Sean McDermott
2nd · 0:05BUF +8% win prob(:05) 2-T.Bass 33 yard field goal is GOOD, Center-69-R.Ferguson, Holder-8-S.Martin.
1st · 12:59BUF +8% win prob(12:59) (Shotgun) 17-J.Allen pass deep left to 18-A.Cooper to KC 31 for 30 yards (13-N.Johnson). Caught near sideline at KC 39.