luckadjusted
NFL Week 9 · 2026

Week 15 2024 · December 15, 2024

Cowboys at Panthers, Week 15 2024: who deserved to win?

The Cowboys beat the Panthers 30–14, and the replays back it up: with the way both teams actually played, the Cowboys win 9 of 10. The Panthers had the bounces: injuries alone were worth 20 points of win probability to the Panthers.

An off day for the Panthers: their defense played far below its usual level. In a fresh game against the Cowboys they would win 44% of the time; with this day’s form, 11%. The numbers

Before kickoff the Panthers were 57% favorites. The biggest swing (Q2, 6:28 left): the Panthers were intercepted on a well-placed throw, worth 10 points of win probability to the Cowboys.

Final

Dallas Cowboys 30
Carolina Panthers 14

December 15, 2024 · Bank of America Stadium · Closing line: Panthers −2.5

Luck index +11 Cowboys about even · −11 Panthers

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. Cowboys win 9, Panthers win 1.

  1. 1 DAL 35 CAR 6
  2. 2 DAL 30 CAR 7
  3. 3 DAL 33 CAR 14
  4. 4 DAL 32 CAR 16
  5. 5 DAL 27 CAR 15
  6. 6 DAL 23 CAR 13
  7. 7 DAL 16 CAR 9
  8. 8 DAL 17 CAR 13
  9. 9 DAL 16 CAR 14
  10. 10 DAL 17 CAR 24

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 Panthers

Their defense played far below its usual level. In a fresh game against the Cowboys they would win 44% of the time; with this day’s form, 11%.

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

UnitThis gameUsual levelBetter or worse than usual
Cowboys offenseEPA per play gained +0.35 +0.09 better by 0.26
Cowboys defenseEPA per play allowed +0.05 +0.13 better by 0.07
Panthers offenseEPA per play gained +0.05 +0.01 better by 0.05
Panthers defenseEPA per play allowed +0.35 +0.13 worse by 0.21

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

Cowboys win 89% of them, Panthers 11%, counting the 2% still level after regulation as half each. The line is what actually happened: Cowboys by 16.

Show as a table
Final margin in the replaysShare of replays
Cowboys by 17+48.5%
Cowboys by 9–1621.6%
Cowboys by 1–817.4%
Level after regulation1.8%
Panthers by 1–87.4%
Panthers by 9–162.5%
Panthers by 17+0.9%

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 +4.0 points to the Panthers: the final margin was Cowboys by 16, without the luck Cowboys by 20. 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.

  • B. Aubrey, 52 yds made · 76% expected
  • B. Aubrey, 70 yds missed · 20% expected
  • B. Aubrey, 45 yds made · 89% expected
  • B. Aubrey, 41 yds made · 88% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Cowboys 14 for 99 yards, Panthers 8 for 65 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 half toward luck; pre-snap fouls, which repeat, don’t count. How calls are valued

WhenFlagWin probability for
Q1 13:00 Illegal Formation on the Cowboys, 5 yards, wiping out the play · pre-snap +9% CAR +3.0 pts
Q1 7:01 Defensive Offside on the Cowboys (Amani Oruwariye), 5 yards · pre-snap +2% CAR +0.7 pts
Q1 1:46 Illegal Block Above the Waist on the Panthers (Lonnie Johnson Jr.), 10 yards +3% DAL +0.5 pts
Q1 0:24 False Start on the Panthers, 5 yards · pre-snap +1% DAL +0.4 pts
Q2 15:00 Illegal Block Above the Waist on the Cowboys (Israel Mukuamu), 10 yards +2% CAR +0.9 pts
Q2 14:14 Offensive Holding on the Cowboys, 10 yards +2% CAR +0.9 pts
Q2 4:14 False Start on the Cowboys (Jalen Tolbert), 5 yards · pre-snap +2% CAR +0.7 pts
Q2 3:18 False Start on the Panthers, 5 yards · pre-snap +1% DAL +0.3 pts
Q2 1:57 Unnecessary Roughness on the Panthers (Xavier Woods), 15 yards +3% DAL +1.3 pts
Q2 1:06 Offensive Holding on the Cowboys, 10 yards, wiping out the play +4% CAR +1.6 pts
Q3 11:23 False Start on the Panthers (Deven Thompkins), 5 yards · pre-snap 0% CAR +0.5 pts
Q3 0:13 False Start on the Cowboys, 5 yards · pre-snap 0% CAR +0.7 pts
Q4 14:55 Offensive Too Many Men on Field on the Cowboys, 5 yards · pre-snap 0% CAR +0.4 pts
Q4 10:58 Neutral Zone Infraction on the Cowboys (Micah Parsons), 5 yards · pre-snap 0% CAR +0.2 pts
Q4 10:03 False Start on the Panthers (Adam Thielen), 5 yards · pre-snap 0% DAL +0.5 pts
Q4 9:34 Defensive Pass Interference on the Cowboys (Andrew Booth), 20 yards +1% CAR +3.5 pts
Q4 9:28 Defensive Pass Interference on the Cowboys (DaRon Bland), 4 yards 0% CAR +0.7 pts
Q4 9:25 False Start on the Panthers, 5 yards · pre-snap 0% DAL +0.8 pts
Q4 9:13 Unnecessary Roughness on the Panthers, 15 yards 0% DAL +1.4 pts
Q4 4:51 Defensive Holding on the Cowboys (Marist Liufau), 5 yards 0% CAR +1.8 pts
Q4 4:43 Neutral Zone Infraction on the Cowboys (Micah Parsons), 5 yards · pre-snap 0% CAR +0.4 pts
Q4 4:43 Defensive Offside on the Cowboys (Carl Lawson), 5 yards · pre-snap 0% CAR +0.1 pts

Cowboys penalties, every game · Panthers penalties, every game · All teams, 2024

When it happened

Panthers’ chance of winning

As low as 0% and as high as 72%. 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 Panthers were ahead in it, below while the Cowboys were.
#WhenWhat happenedWin probability forNext drive
1 Q1 13:00 Illegal Formation on the Cowboys, 5 yards, wiping out the playPre-snap flags +9% CAR CAR: Turnover
2 Q1 8:23 The Panthers converted 3rd & 53rd & 4th downs · 37% expected +6% CAR CAR: Turnover
3 Q1 2:52 The Panthers fumbled and the Cowboys recoveredFumble bounces · loose balls are close to 50/50 +7% DAL CAR: Punt
4 Q2 13:14 The Cowboys converted 3rd & 83rd & 4th downs · 36% expected +6% DAL DAL: Touchdown
5 Q2 11:08 The Cowboys converted 3rd & 33rd & 4th downs · 57% expected +6% DAL DAL: Touchdown
6 Q2 6:28 The Panthers were intercepted on a well-placed throwInterceptions · defenses pick off well under 1% of clean throws +9% DAL CAR: Punt
7 Q2 0:03 B. Aubrey missed a 70-yard field goalKicks · 20% expected for him, 30 of 31 from 45+ before +8% CAR DAL: Touchdown
8 Q3 14:56 The Panthers fumbled and the Cowboys recoveredFumble bounces · loose balls are close to 50/50 +7% DAL CAR: Punt

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.

  • Nick Scott (CAR SS), out · 0.3 pts
  • Trevin Wallace (CAR LB), out · 0.2 pts
  • Dak Prescott (DAL QB), out (IR), replaced by c.rush · 6.9 pts
  • Trevon Diggs (DAL CB), out · 1.0 pts
  • Zack Martin (DAL G), out (IR) · 0.7 pts
  • Cooper Beebe (DAL C), out · 0.4 pts
  • Caelen Carson (DAL CB), out (IR) · 0.3 pts
  • DeMarvion Overshown (DAL LB), out (IR) · 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

Cowboys 97% · Panthers 3%

Final margin
Cowboys by 16
Luck in points
4.0 for the Panthers
Luck-adjusted margin
Cowboys by 20.0
Replay with same day's form
Cowboys 89% · Panthers 11% unchanged: why
How much of each is luck?

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

What counts

None by default: our tests measured no carryover after a lucky break. Slide it up to count a break for more than its own swing. 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 15 2024 games · Cowboys · Panthers

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