luckadjusted

Week 1 2022 · September 11, 2022

Saints at Falcons, Week 1 2022: who deserved to win?

The Saints beat the Falcons 27–26 and were the better team on the day: replayed with the same form, they win 6 of 10. The Falcons had the bounces: judgment calls alone were worth 4.7 points to the Falcons.

Before kickoff the Saints were 67% favorites. The biggest swing (Q4, 0:02 left): Y. Koo had a 63-yard field goal blocked, worth 58 points of win probability to the Saints.

Final

New Orleans Saints 27
Atlanta Falcons 26

September 11, 2022 · Mercedes-Benz Stadium · Closing line: Saints −6

Luck index +37 Saints lucky · −37 Falcons

Each team’s own plays from this game, resampled into new drives 4,000 times: with the way both teams actually played, how often does this performance win? How the replay works

Ten replays. Saints win 6, Falcons win 4.

  1. 1 NO 30 ATL 7
  2. 2 NO 30 ATL 13
  3. 3 NO 30 ATL 17
  4. 4 NO 27 ATL 18
  5. 5 NO 23 ATL 17
  6. 6 NO 15 ATL 13
  7. 7 NO 27 ATL 29
  8. 8 NO 16 ATL 23
  9. 9 NO 21 ATL 35
  10. 10 NO 10 ATL 30

Three other ways to ask

Each answers a different question, so none of them replaces the replay above.

The closing betting line, turned into a probability. What everyone knew before the game.

The line plus what this game showed, weighted by how much one game can tell. It stays close to the line because one game says little.

Every kick, fumble bounce, drop, conversion and judgment call redrawn; everything else fixed. The narrowest view of luck.

How 4,000 replays ended

Saints win 63% of them, Falcons 37%, counting the 3% still level after regulation as half each. The line is what actually happened: Saints by 1.

Show as a table
Final margin in the replaysShare of replays
Saints by 17+19.7%
Saints by 9–1619.1%
Saints by 1–823.5%
Level after regulation2.5%
Falcons by 1–817.6%
Falcons by 9–1610.0%
Falcons by 17+7.6%

Where the luck was

Take the luck out

The final margin was Saints by 1. Remove the luck, one kind at a time, and it becomes Saints by 6.4.

Each row takes one kind of luck out of the margin. Color shows which team it helped. Luck shares are the fitted ones (how much of each component is luck).

The kicks

How likely each kicker was to make that kick (his own record, the distance and the weather), and what happened.

  • Y. Koo, 54 yds made · 73% expected
  • W. Lutz, 44 yds missed · 83% expected
  • Y. Koo, 50 yds made · 80% expected
  • Y. Koo, 40 yds made · 90% expected
  • W. Lutz, 49 yds made · 74% expected
  • Y. Koo, 27 yds made · 99% expected
  • W. Lutz, 51 yds made · 72% expected
  • Y. Koo, 63 yds blocked · 62% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

When it happened

Falcons’ chance of winning

As low as 0% and as high as 98%. Numbers mark the biggest luck moments, listed below.

nflfastR’s in-game win probability. It ignores the betting line, so it starts near even. Shaded above the middle while the Falcons were ahead in it, below while the Saints were.
#WhenWhat happenedWin probability forNext drive
1 Q1 6:33 The Saints converted 3rd & 13rd & 4th downs · 74% expected +15% NO NO: Touchdown
2 Q2 1:14 The Falcons were stopped on 3rd & 53rd & 4th downs · 41% expectedK. Pitts dropped a catchable passDrops · 0 drops on 2 catchable balls before this +11% NO ATL: Field goal
3 Q4 3:38 The Saints’ two-point try failed3rd & 4th downs · 47% expected +10% ATL NO: Field goal
4 Q4 0:38 Intentional Grounding on the Saints (Jameis Winston), 10 yardsJudgment calls · 8 flags in 1554 snaps before, position avg 1 per 697 +12% ATL ATL: Missed field goal
5 Q4 0:23 W. Lutz made 51-yard field goalKicks · 72% expected for him, 17 of 24 from 45+ before +19% NO –
6 Q4 0:19 The Falcons got away with an interception-worthy throwInterceptions · 49% expected to stay out of the defense's hands +44% ATL ATL: Missed field goal
7 Q4 0:06 Unnecessary Roughness on the Saints (Marshon Lattimore), 15 yardsJudgment calls · 18 flags in 2898 snaps before, position avg 1 per 216 +14% ATL ATL: Missed field goal
8 Q4 0:02 Y. Koo had a 63-yard field goal blockedKicks · 62% expected for him, 28 of 31 from 45+ before +58% NO –

Missing players

Key players (usually on the field for half the snaps or more) who missed this game or part of it, valued by position and quality. The same players are missing in every replay, so this counts as luck in points only.

  • Deion Jones (ATL LB), out (IR) · 0.4 pts
  • Jalen Mayfield (ATL G), out (IR) · 0.2 pts
  • Paulson Adebo (NO CB), out · 0.6 pts
  • Tre'Quan Smith (NO WR), out · 0.4 pts
  • Nick Vannett (NO TE), out · 0.2 pts

Adjust the assumptions

Disagree with how much of a fumble bounce or a pass interference call is luck? Change it and the coin-flip replay reruns in your browser.

Only coin-flips re-rolled

Saints 77% · Falcons 23%

Final margin
Saints by 1
Luck in points
5.4 for the Falcons
Luck-adjusted margin
Saints by 6.4
Replay with same day's form
Saints 63% · Falcons 37% unchanged: why
How much of each is luck?

0% treats it as skill, 100% as pure luck. The tick is our fit.

What counts

We tested momentum on 19,000 lucky breaks and found none, so it's off by default. Why

Flip a play

Force the other outcome, in this game and in every replay: a made kick becomes a miss, a stop becomes a conversion, a flag goes the other way.

About these numbers

Play-by-play and win probability from nflfastR via nflverse; kicks valued against each kicker’s own record; drops and interception-worthy throws from FTN charting; injuries from snap counts and injury reports.

Methodology and validation · All Week 1 2022 games · Saints · Falcons

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