luckadjusted

Week 13 2020 · December 7, 2020

No FTN charting for this game (drops and interception-worthy throws are not modelled).

Washington at Steelers, Week 13 2020: who deserved to win?

Washington beat the Steelers 23–17, but the Steelers played well enough to win it: they take 7 of 10 replays with the same day's form. Luck ran their way: kicks alone were worth 3.5 points to Washington.

Before kickoff the Steelers were 66% favorites. The biggest swing (Q4, 3:10 left): Washington converted 3rd & 4, worth 23 points of win probability to the Washington.

Final

Washington Football Team 23
Pittsburgh Steelers 17

December 7, 2020 · Heinz Field · Closing line: Steelers −5.5

Luck index +72 Washington very lucky · −72 Steelers

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. Washington win 3, Steelers win 7.

  1. 1 WAS 28 PIT 10
  2. 2 WAS 16 PIT 7
  3. 3 WAS 20 PIT 17
  4. 4 WAS 27 PIT 29
  5. 5 WAS 24 PIT 29
  6. 6 WAS 20 PIT 29
  7. 7 WAS 7 PIT 19
  8. 8 WAS 11 PIT 26
  9. 9 WAS 10 PIT 30
  10. 10 WAS 12 PIT 41

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

Washington win 28% of them, Steelers 72%, counting the 3% still level after regulation as half each. The line is what actually happened: Washington by 6.

Show as a table
Final margin in the replaysShare of replays
Washington by 17+4.4%
Washington by 9–167.9%
Washington by 1–814.3%
Level after regulation3.4%
Steelers by 1–824.3%
Steelers by 9–1620.3%
Steelers by 17+25.4%

Where the luck was

Take the luck out

The final margin was Washington by 6. Remove the luck, one kind at a time, and it becomes Washington by 0.4.

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.

  • D. Hopkins, 49 yds made · 65% expected
  • M. Wright, 37 yds made · 88% expected
  • D. Hopkins, 45 yds made · 73% expected
  • D. Hopkins, 45 yds made · 73% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

When it happened

Steelers’ chance of winning

As low as 0% and as high as 90%. 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 Steelers were ahead in it, below while the Washington were.
#WhenWhat happenedWin probability forNext drive
1 Q1 7:00 Roughing the Kicker on the Steelers (Marcus Allen), 15 yardsJudgment calls · 0 flags in 186 snaps before, position avg 1 per 395 +9% WAS WAS: Punt
2 Q2 14:12 The Steelers converted 3rd & 123rd & 4th downs · 24% expected +11% PIT PIT: Touchdown
3 Q2 11:34 Ineligible Downfield Pass on the Steelers, 5 yards, wiping out the playJudgment calls +8% WAS WAS: Turnover on downs
4 Q2 9:06 Washington were stopped on 4th & 13rd & 4th downs · 71% expected +8% PIT WAS: Punt
5 Q2 5:38 The Steelers were stopped on 4th & 13rd & 4th downs · 66% expected +9% WAS PIT: Touchdown
6 Q3 2:29 The Steelers converted 3rd & 143rd & 4th downs · 22% expected +8% PIT PIT: Field goal
7 Q4 3:10 Washington converted 3rd & 43rd & 4th downs · 43% expected +23% WAS WAS: Field goal
8 Q4 2:07 D. Hopkins made 45-yard field goalKicks · 73% expected for him, 7 of 12 from 45+ before +12% WAS WAS: Field goal

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.

  • Steven Nelson (PIT CB), out · 0.8 pts
  • Maurkice Pouncey (PIT C), out (IR) · 0.8 pts
  • James Conner (PIT RB), out (IR) · 0.3 pts
  • Chris Boswell (PIT K), out · 0.3 pts
  • Bud Dupree (PIT LB), out (IR) · 0.3 pts
  • Kyle Allen (WAS QB), out (IR), replaced by a.smith · 1.7 pts
  • Landon Collins (WAS S), out (IR) · 0.7 pts
  • Geron Christian (WAS T), out (IR) · 0.4 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

Washington 57% · Steelers 43%

Final margin
Washington by 6
Luck in points
5.6 for the Washington
Luck-adjusted margin
Washington by 0.4
Replay with same day's form
Washington 28% · Steelers 72% 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 (not available for this game); injuries from snap counts and injury reports. No FTN charting for this game (drops and interception-worthy throws are not modelled).

Methodology and validation · All Week 13 2020 games · Washington · Steelers

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