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San Francisco 49ers 17 at Los Angeles Rams 20. Final.
Rams -3.5 no coverU 45.5 ✓
The verdict · 2021 Conference Championship
Los Angeles Rams 20, 49ers 17 — on the last possessions.
It turned at Q4 1:19, 3rd and 13, on Travin Howard — 21.9 win-probability points to the Rams on one snap, the largest move of the game.
The snaps that bent it
The biggest swing of the game · Q4 1:19 · 3rd and 13
Travin Howard
Rams
(1:19) (No Huddle, Shotgun) 10-J.Garoppolo pass short left intended for 23-J.Hasty INTERCEPTED by 32-T.Howard [99-A.Donald] at SF 19. 32-T.Howard to SF 13 for 6 yards (66-T.Compton).
Dome
Rams closed -3.5, won by 3 — but didn't cover.
Los Angeles Rams 20–17 — decided on the final possessions. Biggest swing: Q4 1:19, Rams +21.9% win probability on one snap.
21.9
win-probability points on one snap
The largest move of the game. The two below are drawn against it.
Jimmie Ward49ersQ1 7:04(7:04) (Shotgun) 9-M.Stafford pass short middle intended for 10-C.Kupp INTERCEPTED by 1-J.Ward (24-K.Williams) at SF 0. 1-J.Ward to SF 23 for 23 yards (79-R.Havenstein).
14.7pts
Cooper KuppRamsQ4 3:26(3:26) (Shotgun) 9-M.Stafford pass short middle to 10-C.Kupp to SF 12 for 25 yards (1-J.Ward).
15.7pts
What separated them
Third down
Rams won this one — 11 of 17 on third down, against 49ers at 3 of 9 on third down.
Ramsthe gap went the way the scoreboard did
Staying on schedule
Rams won this one — 45% of snaps stayed on schedule, against 49ers at 33% of snaps stayed on schedule.
Ramsthe gap went the way the scoreboard did
Explosive plays
Rams won this one — 6 chunk plays, against 49ers at 3 chunk plays.
Ramsthe gap went the way the scoreboard did
Every snap
Rams won this one — +0.07 expected points per snap, against 49ers at -0.06 expected points per snap.
3 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 3.5 win-probability points apart on the average play, and 9 apart at the widest — with the model the more convinced about 49ers.
MarketModelmodel higher on Ramshigher on 49ers156 of 167 plays carry both curves
(1:19) (No Huddle, Shotgun) 10-J.Garoppolo pass short left intended for 23-J.Hasty INTERCEPTED by 32-T.Howard [99-A.Donald] at SF 19. 32-T.Howard to SF 13 for 6 yards (66-T.Compton).
Swing +21.9 for RamsExpected points +4.56 for RamsThe model had Rams 4 points higher than the market did.play 162
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 · 1:19SF +22% win prob(1:19) (No Huddle, Shotgun) 10-J.Garoppolo pass short left intended for 23-J.Hasty INTERCEPTED by 32-T.Howard [99-A.Donald] at SF 19. 32-T.Howard to SF 13 for 6 yards (66-T.Compton).
4th · 3:26LA +16% win prob(3:26) (Shotgun) 9-M.Stafford pass short middle to 10-C.Kupp to SF 12 for 25 yards (1-J.Ward).
1st · 7:04SF +15% win prob(7:04) (Shotgun) 9-M.Stafford pass short middle intended for 10-C.Kupp INTERCEPTED by 1-J.Ward (24-K.Williams) at SF 0. 1-J.Ward to SF 23 for 23 yards (79-R.Havenstein).
4th · 8:50LA +14% win prob(8:50) (Shotgun) 9-M.Stafford pass short right to 10-C.Kupp to SF 25 for 16 yards (1-J.Ward; 29-T.Hufanga).
2nd · 6:19LA +12% win prob(6:19) (Shotgun) 10-J.Garoppolo pass short right to 19-D.Samuel for 44 yards, TOUCHDOWN.
4th · 9:47LA +12% win prob(9:47) (Shotgun) 9-M.Stafford pass deep left to 3-O.Beckham to LA 44 for 29 yards (1-J.Ward). PENALTY on SF-1-J.Ward, Unnecessary Roughness, 15 yards, enforced at LA 44.
SettledThe modelled figures are the league play-by-play model's, not ours.
How the points landed
The margin ledger
Matt Gay's 30-yard field goal with 1:49 left in the 4th put Los Angeles Rams ahead for good. It was the last score of the day.
Lead
2nd8:50Cooper Kupp·16-yd TD catch16-yard touchdown catchfrom Matthew Staffordfrom Matthew Stafford+70–7
2nd6:19Deebo Samuel·44-yd TD catch44-yard touchdown catchfrom Jimmy Garoppolofrom Jimmy Garoppolo+77–7
2nd0:02Robbie Gould·38-yd field goal38-yard field goalholder M.Wishnowsky · snap T.Pepper+310–7
3rd2:04George Kittle·16-yd TD catch16-yard touchdown catchfrom Jimmy Garoppolofrom Jimmy Garoppolo+717–7
4th13:35Cooper Kupp·11-yd TD catch11-yard touchdown catchfrom Matthew Staffordfrom Matthew Stafford+717–14
4th6:53Matt Gay·40-yd field goal40-yard field goalholder J.Hekker · snap M.Orzech+317–17
4th1:49Matt Gay·30-yd field goal30-yard field goalholder J.Hekker · snap M.OrzechLead never changed again+317–20
7 scores · bar length is the lead after each one
Down-to-down truth
Situational splits
49erscategory by categoryRams
49ers2–6Rams
282Total yards402
5.8Yards per play5.5
33%Success rate45%
33%Third-down rate65%
1Red-zone touchdowns2
3Explosive plays6
14First downs22
0Sacks taken2
1Turnovers1
The read
Rams ahead 6–2 on categories, but the biggest gap belongs to 49ers, in 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, ±0.45 points.
Every snapexpected points added per play, all downs
−0.0649ers: −0.06 expected points added per play
+0.07Rams: +0.07 expected points added per play
Dropping backexpected points added per dropback
+0.1949ers: +0.19 expected points added per play
+0.32Rams: +0.32 expected points added per play
Running itexpected points added per rush
−0.4549ers: −0.45 expected points added per play
−0.41Rams: −0.41 expected points added per play
Neither side “wins” volume or play-calling mix, so neither is drawn as a duel: 49ers ran 49 snaps at a 61% dropback rate against Rams’s 73 at 66%. Red-zone trips: 49ers 3, Rams 6.
NoteRams won the down-to-down efficiency fight: 0.07 expected points added per play vs -0.06.
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.
This is not a regular-season game, so every season number below is that team's 2021 regular season — the only stretch long enough to be a habit.
their week-to-week swingall 32 teams
upper band = their week-to-week swing · lower rule = all 32 teams · scale -25 pts to 18 pts
right on their number · +0.8 vs their 15.8%, and they swing ±6.7 week to week (+0.13× that swing) · 48 dropbacks
Rams10.0%
inside their normal wobble · −2.7 vs their 12.7%, and they swing ±4.6 week to week (−0.58× that swing) · 30 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.
NoteNothing either side did tonight left its own normal range. The widest departure was LA's sack or hit rate, 10.0% against a season mean of 12.7% — and LA swings 4.6 points week to week, so that is a Sunday, not a plan.
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. 1 line has no expected-points read and sits 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 Rams attack right, the 49ers 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.
49ers←Rams→
Q1Q2Q3Q4
J.Garoppolo pass−19% win probabilitymoment 4 of 4
(1:19) (No Huddle, Shotgun) 10-J.Garoppolo pass short left intended for 23-J.Hasty INTERCEPTED by 32-T.Howard [99-A.Donald] at SF 19. 32-T.Howard to SF 13 for 6 yards (66-T.Compton).
Q4 1:19 · 49ers · 3rd & 13 at SF 22 · gained nothing · -4.56 EP · −18.6% win probability
154 snaps placed · 13 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: 167 plays across 18 drives, personnel groupings on 167 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
7 of 18 drives ended in points. The longest march was LA moving 97 yards from the LA 3 for a touchdown. Each bar is the ground a drive actually covered; LA attacks right, SF attacks left. Hatching marks a trip inside the twenty.
Every snap
Play stream
167 of 167 plays
Team
Quarter
Down
Play type
Expected points added
Event
Charted
Plays shown
167
EPA per play
-0.04
Success rate
36%
Yards
678
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.
Rams1 RB, 1 TE, 3 WR71+0.0965%
49ers1 RB, 1 TE, 3 WR24-0.1375%
49ers2 RB, 1 TE, 2 WR13-0.2738%
49ers1 RB, 2 TE, 2 WR9+0.3256%
Rams1 RB, 0 TE, 3 WR2——
49ers0 RB, 2 TE, 3 WR1——
49ers2 RB, 2 TE, 1 WR1——
49ers2 RB, 1 TE, 1 WR1——
snapsepapass rate
167 plays · ranked by the win probability each one moved
Every play
Ball
When
Play
Only
Who
167 plays
Bar length is win probability the play moved
1st quarter35 plays
Punt5 plays, from the Rams 25 to the Rams 31
Punt4 plays, from the 49ers 20 to the 49ers 23
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldFour linemen, two linebackers and five backsRoute runCrosserCoverageCover 0, no safety helpMan or zoneManIn the boxSix defendersRushing the passerFourPressure (charted)The passer was pressuredTime to throw2.9 seconds
Intercepted10 plays, from the Rams 33 to the 49ers 3
Punt7 plays, from the 49ers 23 to the Rams 40
The period ended8 plays, from the Rams 3 to the Rams 28
2nd quarter46 plays
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldFour linemen, two linebackers and five backsRoute runCornerCoverageCover 6, quarter-quarter-halfMan or zoneZoneIn the boxSix defendersRushing the passerFourPressure (charted)The passer was kept cleanTime to throw2.8 seconds
49ers0Rams6
49ers0Rams7
Touchdown14 plays, from the Rams 31 to the 49ers 13
FormationEmpty backfieldOffense on the fieldOne back, one tight end and three receiversDefense on the fieldTwo linemen, four linebackers and five backsRoute runScreenCoverageCover 1, man with a free safetyMan or zoneManIn the boxSix defendersRushing the passerFourPressure (charted)The passer was kept cleanTime to throw1.7 seconds
49ers6Rams7
49ers7Rams7
Touchdown7 plays, from the 49ers 25 to the Rams 42
No good13 plays, from the Rams 23 to the 49ers 36
49ers10Rams7
Field goal11 plays, from the 49ers 44 to the Rams 20
3rd quarter37 plays
Punt12 plays, from the 49ers 18 to the Rams 42
Turnover on downs7 plays, from the Rams 11 to the 49ers 43
49ers16Rams7
49ers17Rams7
Touchdown11 plays, from the 49ers 42 to the Rams 15
The period ended7 plays, from the Rams 25 to the 49ers 40
4th quarter49 plays
49ers17Rams13
49ers17Rams14
Touchdown4 plays, from the 49ers 20 to the 49ers 11
Punt9 plays, from the 49ers 14 to the Rams 44
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldFour linemen, two linebackers and five backsRoute runGoCoverageCover 4, quartersMan or zoneZoneIn the boxSix defendersRushing the passerFourPressure (charted)The passer was kept cleanTime to throw3.0 seconds
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldFour linemen, one linebacker and six backsRoute runScreenCoverageCover 4, quartersMan or zoneZoneIn the boxFive defendersRushing the passerFourPressure (charted)The passer was kept cleanTime to throw1.6 seconds
49ers17Rams17
Field goal9 plays, from the Rams 15 to the 49ers 18
Punt6 plays
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldFour linemen, two linebackers and five backsRoute runSlantCoverageCover 1, man with a free safetyMan or zoneManIn the boxSeven defendersRushing the passerFivePressure (charted)The passer was pressuredTime to throw2.6 seconds
49ers17Rams20
Field goal12 plays, from the Rams 39 to the 49ers 12
FormationShotgunOffense on the fieldOne back, one tight end and three receiversDefense on the fieldTwo linemen, four linebackers and five backsRoute runScreenCoverageCover 1, man with a free safetyMan or zoneManIn the boxFive defendersRushing the passerFivePressure (charted)The passer was pressuredTime to throw6.1 seconds
Intercepted4 plays
The period ended5 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
Rams -3.5
Closing total
45.5
49ers moneyline
+155
Rams moneyline
-180
Rams closed -3.5, won by 3 — but didn't cover.
Total closed 45.5; the game landed 37 — under by 8.5.
Conditions and crew
Game environment
Venue
SoFi Stadium
Roof / surface
dome · matrixturf
Kickoff weather
Played indoors — no weather to report.
Referee
Carl Cheffers
Rest
49ers 8 days · Rams 7 days
Coaches
Kyle Shanahan vs Sean McVay
NoteDivision game — familiarity tightens these matchups; closing numbers tend to be sharper.
3rd · 8:03SF +11% win prob(8:03) 9-M.Stafford up the middle to SF 43 for no gain (93-D.Jones; 54-F.Warner). Los Angeles Rams challenged the short of the line to gain ruling, and the play was Upheld. The ruling on the field stands. (Timeout #1.)
2nd · 8:50LA +8% win prob(8:50) (Shotgun) 9-M.Stafford pass deep right to 10-C.Kupp for 16 yards, TOUCHDOWN.