luckadjusted
CFB Week 4 · 2026

Week 4 2026 · September 25, 2026

Navy at UAB, Week 4 2026: who deserved to win?

UAB beat Navy 24–20, but the replays lean toward Navy: it takes 7 of 10 with the same day's form. Luck ran its way: fumble bounces alone were worth 9 points of win probability to UAB.

Before kickoff Navy was a 66% favorite. The biggest swing (Q4, 0:24 left): Navy fumbled and recovered it, worth 15 points of win probability to Navy.

Final

Navy Midshipmen 20
UAB Blazers 24

September 25, 2026 · Protective Stadium · Closing line: Navy −6.5

Luck index +68 UAB very lucky · −68 Navy

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. Navy wins 7, UAB wins 3.

  1. 1 NAVY 34 UAB 3
  2. 2 NAVY 31 UAB 7
  3. 3 NAVY 35 UAB 17
  4. 4 NAVY 21 UAB 7
  5. 5 NAVY 20 UAB 10
  6. 6 NAVY 34 UAB 27
  7. 7 NAVY 17 UAB 14
  8. 8 NAVY 21 UAB 24
  9. 9 NAVY 14 UAB 23
  10. 10 NAVY 0 UAB 16

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.

How 4,000 replays ended

Navy wins 68% of them, UAB 32%, counting the 5% still level after regulation as half each. The line is what actually happened: UAB by 4.

Show as a table
Final margin in the replaysShare of replays
Navy by 17+27.9%
Navy by 9–1617.6%
Navy by 1–820.9%
Level after regulation5.4%
UAB by 1–814.6%
UAB by 9–168.3%
UAB by 17+5.2%

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 +0.4 points to Navy: the final margin was UAB by 4, without the luck UAB by 4.4. 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 what happened.

  • J. Delange, 44 yds made · 67% expected
  • N. Bartley, 34 yds made · 81% expected
  • N. Bartley, 31 yds made · 85% expected
  • J. Delange, 47 yds missed · 62% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Navy 2 for 10 yards, UAB 4 for 40 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 11:50 Offside on UAB, 5 yards · pre-snap +2% NAVY +1.0 pts
Q1 7:02 Unnecessary Roughness on UAB, 15 yards +2% NAVY +0.9 pts
Q2 5:40 Delay of Game on Navy, 5 yards · pre-snap +2% UAB +0.7 pts
Q3 5:57 Holding on UAB, 10 yards +2% NAVY +0.6 pts
Q4 13:54 Holding on UAB, 10 yards +6% NAVY +1.6 pts
Q4 1:27 False Start on Navy, 5 yards · pre-snap +3% UAB +0.3 pts

When it happened

UAB’s chance of winning

As low as 16% and as high as 100%. 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 UAB was ahead in it, below while Navy was.
#WhenWhat happenedWin probability forNext drive
1 Q3 6:23 Navy converted 3rd & 113rd & 4th downs · 27% expected +10% NAVY NAVY: Touchdown
2 Q3 3:36 UAB converted 3rd & 73rd & 4th downs · 38% expected +7% UAB UAB: Turnover
3 Q4 13:54 Holding on UAB, 10 yardsJudgment calls +6% NAVY NAVY: Turnover
4 Q4 10:46 Navy fumbled and UAB recoveredFumble bounces · loose balls are close to 50/50 +10% UAB NAVY: Turnover
5 Q4 7:02 Navy fumbled and UAB recoveredFumble bounces · loose balls are close to 50/50 +14% UAB NAVY: Turnover on downs
6 Q4 1:01 Navy was stopped on 4th & 103rd & 4th downs · 29% expected +7% UAB NAVY: End of game
7 Q4 0:42 J. Delange missed a 47-yard field goalKicks · 62% expected for him, 8 of 9 from 45+ before +10% NAVY –
8 Q4 0:24 Navy was stopped on 3rd & 173rd & 4th downs · 20% expectedNavy fumbled and recovered itFumble bounces · loose balls are close to 50/50 +15% NAVY –

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

Navy 26% · UAB 74%

Final margin
UAB by 4
Luck in points
0.4 for Navy
Luck-adjusted margin
UAB by 4.4
Replay with same day's form
Navy 68% · UAB 32% 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 4 2026 games · Navy · UAB

More from Week 4 2026

Every week 4 game, 2026