luckadjusted
CFB Week 4 · 2026

Week 12 2025 · November 15, 2025

Virginia at Duke, Week 12 2025: who deserved to win?

Virginia beat Duke 34–17, and the replays back it up: with the way both teams actually played, Virginia wins 10 of 10.

An off day for Duke: its offense and defense both played far below their usual level. In a fresh game against Virginia it would win 49% of the time; with this day’s form, 4%. The numbers

Before kickoff Duke was a 64% favorite. The biggest swing (Q2, 0:18 left): Pass Interference on Virginia, 15 yards, wiping out the play, worth 9 points of win probability to Duke.

Final

Virginia Cavaliers 34
Duke Blue Devils 17

November 15, 2025 · Wallace Wade Stadium · Closing line: Duke −5.5

Luck index +4 Virginia about even · −4 Duke

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. Virginia wins 10, Duke wins 0.

  1. 1 UVA 42 DUKE 0
  2. 2 UVA 34 DUKE 0
  3. 3 UVA 37 DUKE 7
  4. 4 UVA 34 DUKE 7
  5. 5 UVA 30 DUKE 7
  6. 6 UVA 41 DUKE 21
  7. 7 UVA 45 DUKE 28
  8. 8 UVA 16 DUKE 3
  9. 9 UVA 30 DUKE 21
  10. 10 UVA 21 DUKE 17

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, conversion and judgment call redrawn; everything else fixed. The narrowest view of luck.

An off day for Duke

Its offense and defense both played far below their usual level. In a fresh game against Virginia it would win 49% of the time; with this day’s form, 4%.

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

UnitThis gameUsual levelBetter or worse than usual
Virginia offenseEPA per play gained +0.29 +0.04 better by 0.26
Virginia defenseEPA per play allowed −0.45 +0.08 better by 0.53
Duke offenseEPA per play gained −0.45 +0.10 worse by 0.55
Duke defenseEPA per play allowed +0.29 +0.12 worse by 0.17

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

Virginia wins 96% of them, Duke 4%, counting the 1% still level after regulation as half each. The line is what actually happened: Virginia by 17.

Show as a table
Final margin in the replaysShare of replays
Virginia by 17+69.1%
Virginia by 9–1616.9%
Virginia by 1–89.6%
Level after regulation1.4%
Duke by 1–82.2%
Duke by 9–160.6%
Duke by 17+0.3%

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 +7.9 points to Virginia: the final margin was Virginia by 17, without the luck Virginia by 9.1. 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 what happened.

  • T. Pelino, 49 yds made · 56% expected
  • W. Bettridge, 44 yds made · 67% expected
  • W. Bettridge, 42 yds made · 71% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Virginia 7 for 60 yards, Duke 3 for 45 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 12:04 Holding on Virginia, 10 yards +2% DUKE +0.9 pts
Q1 0:43 Holding on Virginia, 10 yards +2% DUKE +0.6 pts
Q2 7:38 Illegal Substitution on Virginia, 5 yards · pre-snap +3% DUKE +1.2 pts
Q2 3:04 Holding on Virginia, 10 yards +2% DUKE +1.0 pts
Q2 1:39 Personal Foul on Duke, 15 yards +4% UVA +1.6 pts
Q2 0:18 Pass Interference on Virginia, 15 yards, wiping out the play +9% DUKE +4.9 pts
Q2 0:03 False Start on Virginia, 5 yards · pre-snap 0% DUKE +0.1 pts
Q3 1:15 Unsportsmanlike Conduct on Duke, 15 yards 0% UVA +2.9 pts
Q4 8:01 Face Mask on Duke, 15 yards +1% UVA +1.6 pts
Q4 6:51 False Start on Virginia, 5 yards · pre-snap 0% DUKE +0.5 pts

When it happened

Duke’s chance of winning

As low as 0% and as high as 66%. Numbers mark the biggest luck moments, listed below.

Our in-game win probability: the score, the value of the possession and the time left, starting from the betting line. Overtime has no clock and is drawn at a fixed width. Shaded above the middle while Duke was ahead in it, below while Virginia was.
#WhenWhat happenedWin probability forNext drive
1 Q1 14:12 Virginia converted 3rd & 103rd & 4th downs · 26% expected +5% UVA UVA: Touchdown
2 Q1 9:48 Virginia converted 4th & 33rd & 4th downs · 52% expected +5% UVA UVA: Touchdown
3 Q1 8:47 Virginia converted 3rd & 73rd & 4th downs · 33% expected +5% UVA UVA: Touchdown
4 Q2 14:53 Virginia converted 3rd & 83rd & 4th downs · 31% expected +6% UVA UVA: Turnover on downs
5 Q2 11:22 Virginia was stopped on 4th & 13rd & 4th downs · 75% expected +9% DUKE UVA: Touchdown
6 Q2 1:54 Virginia converted 3rd & 143rd & 4th downs · 21% expected +4% UVA UVA: Touchdown
7 Q2 0:18 Pass Interference on Virginia, 15 yards, wiping out the playJudgment calls +9% DUKE DUKE: Punt
8 Q3 5:34 Duke converted 3rd & 83rd & 4th downs · 27% expectedDuke fumbled and recovered itFumble bounces · loose balls are close to 50/50 +4% DUKE DUKE: Turnover

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

Virginia 90% · Duke 10%

Final margin
Virginia by 17
Luck in points
7.9 for Virginia
Luck-adjusted margin
Virginia by 9.1
Replay with same day's form
Virginia 96% · Duke 4% 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 expected points from CollegeFootballData.com via cfbfastR; win probability from our own model of the score, the possession and the betting line; kicks valued against each kicker’s own record. College play-by-play has no charting of drops or interception-worthy throws and no injury reports, so those kinds of luck aren’t counted here.

Methodology and validation · All Week 12 2025 games · Virginia · Duke

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