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Los Angeles Chargers 29 at Houston Texans 41. Final.
Chargers -13.5 upset
The verdict · 2021 Week 16
Houston Texans 41, Chargers 29 — with the result never quite settled.
It turned at Q4 12:56, 1st and 10, on Justin Jackson — 25.3 win-probability points to the Texans on one snap, the largest move of the game.
The snaps that bent it
The biggest swing of the game · Q4 12:56 · 1st and 10
Justin Jackson
Texans
(12:56) 22-J.Jackson up the middle to 50 for 1 yard (55-D.Walker). FUMBLES (55-D.Walker), RECOVERED by HOU-36-J.Owens at HOU 47. 36-J.Owens to LAC 47 for 6 yards (82-S.Anderson).
O 46 ✓
Dome
Chargers closed -13.5 and lost outright — an upset against the closing number.
Houston Texans 41–29. Biggest swing: Q4 12:56, Texans +25.3% win probability on one snap.
25.3
win-probability points on one snap
The largest move of the game. The two below are drawn against it.
Chris ConleyTexansQ2 0:33(:33) (No Huddle, Shotgun) 10-D.Mills pass deep right to 18-C.Conley for 41 yards, TOUCHDOWN.
15.4pts
Dominik EberleChargersQ3 11:12(11:12) 16-D.Eberle 52 yard field goal is No Good, Wide Right, Center-46-J.Weeks, Holder-11-C.Johnston.
16.2pts
What separated them
Giveaways
Texans won this one — no giveaways, against Chargers at 3 giveaways.
Texansthe gap went the way the scoreboard did
Running the ball
Texans won this one — +0.11 expected points per carry, against Chargers at -0.33 expected points per carry.
Texansthe gap went the way the scoreboard did
Staying on schedule
Chargers owned this one and still lost it — 58% of snaps stayed on schedule, against Texans at 44% of snaps stayed on schedule.
Chargersthe gap went the other way from the scoreboard
Explosive plays
Texans won this one — 9 chunk plays, against Chargers at 5 chunk plays.
1 other measure was inside a third of the league's own spread — two clubs doing the same thing, so it is 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 26.5 win-probability points apart on the average play, and 48 apart at the widest — with the model the more convinced about Texans.
MarketModelmodel higher on Texanshigher on Chargers162 of 170 plays carry both curves
(12:56) 22-J.Jackson up the middle to 50 for 1 yard (55-D.Walker). FUMBLES (55-D.Walker), RECOVERED by HOU-36-J.Owens at HOU 47. 36-J.Owens to LAC 47 for 6 yards (82-S.Anderson).
Swing +25.3 for TexansExpected points +5.59 for TexansThe model had Texans 26 points higher than the market did.play 122
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 · 12:56LAC +25% win prob(12:56) 22-J.Jackson up the middle to 50 for 1 yard (55-D.Walker). FUMBLES (55-D.Walker), RECOVERED by HOU-36-J.Owens at HOU 47. 36-J.Owens to LAC 47 for 6 yards (82-S.Anderson).
3rd · 11:12LAC +16% win prob(11:12) 16-D.Eberle 52 yard field goal is No Good, Wide Right, Center-46-J.Weeks, Holder-11-C.Johnston.
2nd · 0:33HOU +15% win prob(:33) (No Huddle, Shotgun) 10-D.Mills pass deep right to 18-C.Conley for 41 yards, TOUCHDOWN.
3rd · 2:09HOU +15% win prob(2:09) (Shotgun) 10-D.Mills pass short left to 9-B.Jordan to LAC 20 for 27 yards (32-A.Gilman).
4th · 3:36HOU +10% win prob(3:36) 28-R.Burkhead right guard to LAC 25 for 36 yards (24-N.Adderley).
4th · 13:32HOU +9% win prob(13:32) 10-J.Herbert pass short right to 87-J.Cook pushed ob at LAC 49 for 17 yards (43-N.Hewitt).
SettledThe modelled figures are the league play-by-play model's, not ours.
How the points landed
The margin ledger
Chris Conley's 41-yard touchdown catch with 0:33 left in the 2nd put Houston Texans ahead for good. The lead never changed over the 7 scores that followed.
Lead
1st11:00Dustin Hopkins·50-yd field goal50-yard field goalholder T.Long · snap M.Overton+33–0
4th0:38Josh Palmer·3-yd TD catch3-yard touchdown catchfrom Justin Herbertfrom Justin Herbert · two-point no good+629–41
13 scores · bar length is the lead after each one
Down-to-down truth
Situational splits
Chargerscategory by categoryTexans
Chargers4–4Texans
419Total yards438
7.0Yards per play7.0
58%Success rate44%
67%Third-down rate69%
3Red-zone touchdowns2
5Explosive plays9
25First downs23
1Sacks taken1
3Turnovers0
The read
Deadlocked at 4–4 categories. Biggest gap to Texans, in turnovers.
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, ±0.57 points.
Every snapexpected points added per play, all downs
+0.05Chargers: +0.05 expected points added per play
+0.31Texans: +0.31 expected points added per play
Dropping backexpected points added per dropback
+0.21Chargers: +0.21 expected points added per play
+0.57Texans: +0.57 expected points added per play
Running itexpected points added per rush
−0.33Chargers: −0.33 expected points added per play
+0.11Texans: +0.11 expected points added per play
Neither side “wins” volume or play-calling mix, so neither is drawn as a duel: Chargers ran 60 snaps at a 70% dropback rate against Texans’s 63 at 44%. Red-zone trips: Chargers 4, Texans 5.
NoteTexans won the down-to-down efficiency fight: 0.31 expected points added per play vs 0.05.
Derived from the play-by-play, no model
The Read
6 of 7 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.
Nothing cleared the bars. No reading led the week's slate, set a season mark, reversed the week before, or sat two of the team's own standard deviations off their number — which is what most Sundays look like, and is the finding rather than a gap.
The season-grain rooms, pointed at this one game
Was this normal for them?
6 of 8 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 -20 pts to 20 pts
leaned — stayed blocked · −6.8 vs their 13.9%, and they swing ±6.5 week to week (−1.04× that swing) · 28 dropbacks
Texans2.4%
leaned — stayed blocked · −9.5 vs their 11.8%, and they swing ±5.8 week to week (−1.64× that swing) · 42 dropbacks
Play-action rate
Charted from 2022. The columns exist for 2021 and are entirely empty, which is not a season of data.
Blitz rate sent
Charted from 2022. The columns exist for 2021 and are entirely empty, which is not a season of data.
NoteHOU's sack or hit rate was the night's one real departure: 2.4%, 9.5 points below their season mean of 11.8% and 1.6 times their own 5.8-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.
3 players played under 8 snaps, so their shares read as a dash rather than a number. 3 lines have no expected-points read and sit off the plane.
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 Texans attack right, the Chargers 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.
Chargers←Texans→
Q1Q2Q3Q4
J.Herbert pass−14% win probabilitymoment 1 of 4
(4:07) 10-J.Herbert pass deep middle intended for 5-J.Palmer INTERCEPTED by 36-J.Owens at HOU -1. 36-J.Owens to HOU 6 for 7 yards (5-J.Palmer).
Q2 4:07 · Chargers · 1st & 10 at HOU 39 · gained nothing · -3.46 EP · −13.7% win probability
160 snaps placed · 10 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: 170 plays across 19 drives, personnel groupings on 170 snaps. 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
12 of 19 drives ended in points. The longest march was HOU moving 94 yards from the HOU 6 for a touchdown. Each bar is the ground a drive actually covered; HOU attacks right, LAC attacks left. Hatching marks a trip inside the twenty.
Every snap
Play stream
170 of 170 plays
Team
Quarter
Down
Play type
Expected points added
Event
Charted
Plays shown
170
EPA per play
+0.16
Success rate
50%
Yards
856
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. The names of the eleven on the field are only recorded from 2023 onward, so this game gives the grouping without the roster.
Chargers1 RB, 1 TE, 3 WR47-0.0966%
Texans1 RB, 1 TE, 3 WR39+0.3854%
Texans1 RB, 2 TE, 2 WR17+0.2524%
Chargers1 RB, 2 TE, 2 WR13+0.5454%
Texans1 RB, 3 TE, 1 WR5+0.3940%
Texans0 RB, 2 TE, 2 WR1——
Texans0 RB, 2 TE, 3 WR1——
snapsepapass rate
170 plays · ranked by the win probability each one moved
Every play
Ball
When
Play
Only
Who
170 plays
Bar length is win probability the play moved
1st quarter38 plays
Chargers3Texans0
Field goal10 plays, from the Chargers 25 to the Texans 32
Chargers3Texans6
Chargers3Texans7
Touchdown12 plays, from the Texans 25 to the Chargers 18
Chargers6Texans7
Field goal10 plays, from the Chargers 18 to the Texans 28
The period ended5 plays, from the Texans 25 to the Texans 27
2nd quarter42 plays
Punt1 play
Chargers12Texans7
Touchdown8 plays, from the Chargers 30 to the Texans 17
Chargers12Texans10
Field goal13 plays, from the Texans 25 to the Chargers 26
FormationSingle backOffense on the fieldOne back, one tight end and three receiversDefense on the fieldThree linemen, three linebackers and five backsRoute runPostCoverageCover 2, two deepMan or zoneZoneIn the boxSix defendersRushing the passerThreePressure (charted)The passer was kept cleanTime to throw4.4 seconds
Intercepted4 plays, from the Chargers 36 to the Texans 39
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldTwo linemen, four linebackers and five backsRoute runGoCoverageCover 3, three deepMan or zoneZoneIn the boxSix defendersRushing the passerFourPressure (charted)The passer was pressuredTime to throw2.7 seconds
Chargers12Texans16
Chargers12Texans17
Touchdown11 plays, from the Texans 6 to the Chargers 41
The period ended3 plays
3rd quarter35 plays
No good10 plays, from the Texans 25 to the Chargers 33
Chargers15Texans17
Field goal12 plays, from the Chargers 42 to the Texans 12
The period ended13 plays, from the Texans 25 to the Chargers 8
4th quarter55 plays
Chargers15Texans23
Chargers15Texans24
Touchdown4 plays, from the Chargers 4 to the Chargers 1
Fumble lost3 plays, from the Chargers 32 to the Chargers 49
Chargers15Texans27
Field goal8 plays, from the Chargers 47 to the Chargers 7
Chargers21Texans27
Chargers23Texans27
Touchdown11 plays, from the Chargers 25 to the Texans 9
Chargers23Texans33
Chargers23Texans34
Touchdown12 plays, from the Texans 28 to the Chargers 13
Chargers23Texans40
Touchdown5 plays, from the Chargers 26 to the Chargers 38
Chargers23Texans41
Chargers29Texans41
Touchdown8 plays, from the Chargers 25 to the Texans 3
The period ended3 plays
Win probability is the league play-by-play model, 98.5% of plays · a dash means none was published