luckadjusted

Week 15 2019 · December 15, 2019

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

Eagles at Washington, Week 15 2019: who deserved to win?

The Eagles beat Washington 37–27, but Washington played well enough to win it: they take 7 of 10 replays with the same day's form. Luck ran their way: fumble bounces alone were worth 16 points of win probability to the Eagles.

The Eagles won on an off day: they played far below what the matchup promised. In a fresh game against Washington they would win 69% of the time; with this day’s form, 28%. The numbers

Before kickoff the Eagles were 70% favorites. The biggest swing (Q4, 0:06 left): Return touchdown by the Eagles, worth 31 points of win probability to the Eagles.

Final

Philadelphia Eagles 37
Washington Redskins 27

December 15, 2019 · FedExField · Closing line: Eagles −7

Luck index +72 Eagles very lucky · −72 Washington

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. Eagles win 3, Washington win 7.

  1. 1 PHI 36 WAS 20
  2. 2 PHI 26 WAS 19
  3. 3 PHI 24 WAS 21
  4. 4 PHI 14 WAS 16
  5. 5 PHI 20 WAS 24
  6. 6 PHI 17 WAS 24
  7. 7 PHI 24 WAS 34
  8. 8 PHI 14 WAS 28
  9. 9 PHI 20 WAS 38
  10. 10 PHI 10 WAS 37

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.

The Eagles won on an off day

They played far below what the matchup promised. In a fresh game against Washington they would win 69% of the time; with this day’s form, 28%.

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

UnitThis gameUsual levelBetter or worse than usual
Eagles offenseEPA per play gained +0.27 +0.10 better by 0.18
Eagles defenseEPA per play allowed +0.17 +0.11 worse by 0.06
Washington offenseEPA per play gained +0.17 −0.00 better by 0.17
Washington defenseEPA per play allowed +0.27 +0.14 worse by 0.14

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

Eagles win 28% of them, Washington 72%, counting the 4% still level after regulation as half each. The line is what actually happened: Eagles by 10.

Show as a table
Final margin in the replaysShare of replays
Eagles by 17+4.0%
Eagles by 9–168.4%
Eagles by 1–814.1%
Level after regulation3.8%
Washington by 1–825.3%
Washington by 9–1622.4%
Washington by 17+22.3%

Where the luck was

What the luck was worth

Every lucky and unlucky play, weighted by the moment it happened: its swing in win probability, added up by kind. A missed kick in a decided game counts for nothing; the same kick at the end of a tie game can be most of a win.

Swings add up across a game, so in one that went back and forth they can pass 100%. On the scoreboard the same luck was worth +4.6 points to the Eagles: the final margin was Eagles by 10, without the luck Eagles by 5.4. Luck shares are the fitted ones (how much of each kind is luck).

The kicks

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

  • J. Elliott, 25 yds made · 98% expected
  • D. Hopkins, 53 yds made · 61% expected
  • D. Hopkins, 43 yds made · 80% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Eagles 7 for 54 yards, Washington 5 for 60 yards

Every accepted flag, in order, and what it did to the helped team’s chance of winning at that moment, including any play it wiped out (points on the scoreboard in grey). A flag in a decided game is worth nothing; one at the turn of a close game can be worth most of a win. Judgment calls count toward luck, pre-snap fouls mostly don’t. How calls are valued

WhenFlagWin probability for
Q1 0:30 Unnecessary Roughness on Washington (Montae Nicholson), 15 yards +4% PHI +1.3 pts
Q2 14:10 Illegal Block Above the Waist on the Eagles (Dallas Goedert), 10 yards +3% WAS +1.0 pts
Q2 13:40 False Start on the Eagles, 5 yards · pre-snap +2% WAS +0.4 pts
Q2 13:16 Roughing the Passer on Washington (Ryan Anderson), 15 yards +6% PHI +1.6 pts
Q2 13:11 Offensive Holding on the Eagles (JJ Arcega-Whiteside), 10 yards, wiping out the play +7% WAS +2.2 pts
Q2 9:53 Defensive Pass Interference on the Eagles (Jalen Mills), 14 yards +3% WAS +0.8 pts
Q2 8:21 Defensive Holding on the Eagles (Rasul Douglas), 5 yards, wiping out the play +4% WAS +1.1 pts
Q2 1:15 False Start on Washington, 5 yards · pre-snap +2% PHI +0.3 pts
Q2 1:15 Neutral Zone Infraction on the Eagles (Genard Avery), 5 yards · pre-snap +2% WAS +0.3 pts
Q3 11:17 Roughing the Passer on Washington (Daron Payne), 15 yards +4% PHI +1.6 pts
Q3 6:25 False Start on the Eagles, 5 yards · pre-snap +4% WAS +0.6 pts
Q4 9:14 Offensive Holding on Washington, 10 yards +4% PHI +0.9 pts

Eagles penalties, every game · Washington penalties, every game · All teams, 2019

When it happened

Washington’ chance of winning

As low as 0% and as high as 74%. 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 Washington were ahead in it, below while the Eagles were.
#WhenWhat happenedWin probability forNext drive
1 Q1 4:38 The Eagles converted 3rd & 73rd & 4th downs · 36% expected +11% PHI PHI: Field goal
2 Q3 10:33 The Eagles converted 3rd & 93rd & 4th downs · 32% expected +10% PHI PHI: Touchdown
3 Q3 1:01 Washington converted 3rd & 13rd & 4th downs · 71% expected +9% WAS WAS: Touchdown
4 Q4 13:43 The Eagles converted 3rd & 103rd & 4th downs · 30% expected +22% PHI PHI: Touchdown
5 Q4 10:02 The Eagles converted 3rd & 23rd & 4th downs · 55% expected +9% PHI PHI: Touchdown
6 Q4 8:06 D. Hopkins made 53-yard field goalKicks · 61% expected for him, 2 of 4 from 45+ before +14% WAS WAS: Field goal
7 Q4 6:40 The Eagles were stopped on 3rd & 23rd & 4th downs · 63% expectedThe Eagles fumbled and Washington recoveredFumble bounces · loose balls are close to 50/50 +21% WAS PHI: Touchdown
8 Q4 0:06 Washington fumbled and the Eagles recoveredFumble bounces · loose balls are close to 50/50Return touchdown by the EaglesSpecial teams +31% PHI –

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.

  • Quinton Dunbar (WAS CB), out · 0.6 pts
  • Brandon Scherff (WAS G), out · 0.6 pts
  • Ryan Kerrigan (WAS LB), out (IR) · 0.4 pts
  • Paul Richardson (WAS WR), out (IR) · 0.3 pts
  • Trey Quinn (WAS WR), out · 0.3 pts
  • Lane Johnson (PHI T), out · 1.2 pts
  • Alshon Jeffery (PHI WR), out (IR) · 0.9 pts
  • Nelson Agholor (PHI WR), out · 0.6 pts
  • Derek Barnett (PHI DE), out · 0.4 pts
  • Jordan Howard (PHI RB), out · 0.2 pts
  • Hassan Ridgeway (PHI DT), out (IR) · 0.1 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

Eagles 73% · Washington 27%

Final margin
Eagles by 10
Luck in points
4.6 for the Eagles
Luck-adjusted margin
Eagles by 5.4
Replay with same day's form
Eagles 28% · Washington 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 15 2019 games · Eagles · Washington

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