luckadjusted

Divisional round 2022 · January 22, 2023

Bengals at Bills, Divisional round 2022: who deserved to win?

The Bengals beat the Bills 27–10 and were the better team on the day: replayed with the same form, they win 8 of 10.

An off day for the Bills: their offense and defense both played far below their usual level. In a fresh game against the Bengals they would win 62% of the time; with this day’s form, 24%. The numbers

Before kickoff the Bills were 67% favorites.

Final

Cincinnati Bengals 27
Buffalo Bills 10

January 22, 2023 · New Era Field · Closing line: Bills −6

Luck index +24 Bengals about even · −24 Bills

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. Bengals win 8, Bills win 2.

  1. 1 CIN 40 BUF 10
  2. 2 CIN 35 BUF 14
  3. 3 CIN 31 BUF 14
  4. 4 CIN 27 BUF 14
  5. 5 CIN 27 BUF 17
  6. 6 CIN 24 BUF 17
  7. 7 CIN 31 BUF 27
  8. 8 CIN 44 BUF 42
  9. 9 CIN 23 BUF 27
  10. 10 CIN 20 BUF 34

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.

An off day for the Bills

Their offense and defense both played far below their usual level. In a fresh game against the Bengals they would win 62% of the time; with this day’s form, 24%.

38 points apart for the Bills: the gap is how differently this game went from what the two teams usually are.

UnitThis gameUsual levelBetter or worse than usual
Bengals offenseEPA per play gained +0.34 +0.15 better by 0.19
Bengals defenseEPA per play allowed +0.05 +0.07 better by 0.03
Bills offenseEPA per play gained +0.05 +0.21 worse by 0.16
Bills defenseEPA per play allowed +0.34 +0.05 worse by 0.29

EPA (expected points added) per play on competitive snaps, turnovers left out because they are valued as luck. Usual level: the team’s earlier games this season plus half of last season, pulled toward the league average. One team’s defense and the other team’s offense are the same snaps, so one game can’t fully say whose day it was; it shows how far this one was from both teams’ norms.

How 4,000 replays ended

Bengals win 76% of them, Bills 24%, counting the 5% still level after regulation as half each. The line is what actually happened: Bengals by 17.

Show as a table
Final margin in the replaysShare of replays
Bengals by 17+24.2%
Bengals by 9–1621.9%
Bengals by 1–826.2%
Level after regulation4.8%
Bills by 1–814.9%
Bills by 9–166.0%
Bills by 17+2.1%

Where the luck was

Take the luck out

The final margin was Bengals by 17. Remove the luck, one kind at a time, and it becomes Bengals by 10.1.

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.

  • E. McPherson, 28 yds made · 98% expected
  • T. Bass, 25 yds made · 98% expected
  • E. McPherson, 20 yds made · 100% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

When it happened

Bills’ chance of winning

As low as 0% and as high as 57%. 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 Bills were ahead in it, below while the Bengals were.
#WhenWhat happenedWin probability forNext drive
1 Q1 5:25 Defensive Offside on the Bills (Boogie Basham), 5 yards, wiping out the playPre-snap flags · 1 flag in 720 snaps before, position avg 1 per 277 +5% CIN CIN: Touchdown
2 Q1 3:51 The Bengals converted 3rd & 73rd & 4th downs · 36% expected +6% CIN CIN: Touchdown
3 Q1 2:02 The Bengals converted 3rd & 103rd & 4th downs · 30% expected +5% CIN CIN: Punt
4 Q2 10:32 Offensive Holding on the Bills, 10 yardsJudgment calls +5% CIN CIN: Field goal
5 Q2 7:29 The Bills converted 3rd & 13rd & 4th downs · 71% expected +7% BUF BUF: Touchdown
6 Q2 1:01 D. Singletary dropped a catchable passDrops · 5 drops on 44 catchable balls before this +5% CIN BUF: Punt
7 Q3 7:50 The Bills were stopped on 3rd & 73rd & 4th downs · 31% expected +6% CIN BUF: Field goal
8 Q3 5:23 T. Irwin dropped a catchable passDrops · 0 drops on 19 catchable balls before this +5% BUF CIN: Touchdown

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.

  • Christian Benford (BUF CB), out · 0.5 pts
  • DaQuan Jones (BUF DT), out · 0.4 pts
  • Von Miller (BUF LB), out (IR) · 0.3 pts
  • Damar Hamlin (BUF SS), out (IR) · 0.2 pts
  • Jonah Williams (CIN T), out · 1.0 pts
  • La'el Collins (CIN T), out (IR) · 0.6 pts
  • Alex Cappa (CIN G), out · 0.5 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

Bengals 98% · Bills 2%

Final margin
Bengals by 17
Luck in points
6.9 for the Bengals
Luck-adjusted margin
Bengals by 10.1
Replay with same day's form
Bengals 76% · Bills 24% 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 Divisional round 2022 games · Bengals · Bills

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