luckadjusted
CFB Week 4 · 2026

Week 8 2025 · October 15, 2025

Delaware at Jacksonville State, Week 8 2025: who deserved to win?

Jacksonville State beat Delaware 38–25, and the replays lean its way: with the same day's form, it wins 8 of 10.

Before kickoff Delaware was a 58% favorite. The biggest swing (Q2, 10:37 left): Return touchdown by Jacksonville State, worth 20 points of win probability to Jacksonville State.

Final

Delaware Blue Hens 25
Jacksonville State Gamecocks 38

October 15, 2025 · AmFirst Stadium · Closing line: Delaware −3

Luck index +21 Jacksonville State about even · −21 Delaware

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. Delaware wins 2, Jacksonville State wins 8.

  1. 1 DEL 24 JXST 7
  2. 2 DEL 20 JXST 14
  3. 3 DEL 31 JXST 34
  4. 4 DEL 14 JXST 20
  5. 5 DEL 10 JXST 19
  6. 6 DEL 17 JXST 30
  7. 7 DEL 14 JXST 29
  8. 8 DEL 7 JXST 25
  9. 9 DEL 10 JXST 34
  10. 10 DEL 7 JXST 38

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

Delaware wins 21% of them, Jacksonville State 79%, counting the 2% still level after regulation as half each. The line is what actually happened: Jacksonville State by 13.

Show as a table
Final margin in the replaysShare of replays
Delaware by 17+3.3%
Delaware by 9–166.9%
Delaware by 1–89.9%
Level after regulation2.4%
Jacksonville State by 1–820.4%
Jacksonville State by 9–1618.8%
Jacksonville State by 17+38.3%

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 +0.3 points to Delaware: the final margin was Jacksonville State by 13, without the luck Jacksonville State by 13.3. 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.

  • G. Rippa, 54 yds missed · 47% expected
  • G. Rippa, 46 yds missed · 61% expected
  • G. Rippa, 52 yds made · 50% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Delaware 10 for 82 yards, Jacksonville State 5 for 55 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 14:54 Ineligible Downfield on Delaware, 5 yards, wiping out the play +3% JXST +1.4 pts
Q1 9:27 Illegal Substitution on Delaware, 5 yards · pre-snap +1% JXST +0.7 pts
Q1 7:28 Pass Interference on Delaware, 15 yards +5% JXST +2.3 pts
Q2 10:32 Holding on Delaware, 9 yards +1% JXST +0.6 pts
Q2 2:52 Pass Interference on Jacksonville State, 15 yards +2% DEL +1.4 pts
Q2 2:44 Penalty on Jacksonville State, 0 yards +1% DEL +0.7 pts
Q2 0:45 Personal Foul on Jacksonville State, 15 yards +1% DEL +0.8 pts
Q3 14:25 Holding on Delaware, 10 yards +2% JXST +1.4 pts
Q3 10:21 Pass Interference on Delaware, 3 yards +1% JXST +1.2 pts
Q3 6:09 Holding on Delaware, 10 yards 0% JXST +0.5 pts
Q3 1:41 Delay of Game on Delaware, 5 yards · pre-snap 0% JXST +0.7 pts
Q4 9:41 Holding on Jacksonville State, 10 yards 0% DEL +1.6 pts
Q4 4:52 Illegal Block on Delaware, 10 yards 0% JXST +1.3 pts
Q4 3:03 Pass Interference on Jacksonville State, 15 yards 0% DEL +0.8 pts
Q4 1:37 Holding on Delaware, 10 yards 0% JXST +0.7 pts

When it happened

Jacksonville State’s chance of winning

As low as 39% 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 Jacksonville State was ahead in it, below while Delaware was.
#WhenWhat happenedWin probability forNext drive
1 Q1 13:51 Delaware converted 3rd & 83rd & 4th downs · 37% expected +5% DEL DEL: Punt
2 Q1 10:07 Delaware fumbled and recovered itFumble bounces · loose balls are close to 50/50 +4% DEL DEL: Punt
3 Q1 7:28 Pass Interference on Delaware, 15 yardsJudgment calls +5% JXST JXST: Punt
4 Q1 4:35 Delaware was stopped on 3rd & 93rd & 4th downs · 35% expected +3% JXST DEL: Punt
5 Q2 12:26 G. Rippa missed a 54-yard field goalKicks · 47% expected for him, 7 of 7 from 45+ before +4% DEL JXST: Touchdown
6 Q2 11:16 Delaware was stopped on 3rd & 23rd & 4th downs · 69% expected +5% JXST DEL: Punt
7 Q2 10:37 Delaware fumbled and Jacksonville State recoveredFumble bounces · loose balls are close to 50/50Return touchdown by Jacksonville StateSpecial teams +20% JXST DEL: Punt
8 Q2 7:25 Delaware converted 3rd & 143rd & 4th downs · 26% expected +3% DEL DEL: Turnover on downs

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

Delaware 3% · Jacksonville State 97%

Final margin
Jacksonville State by 13
Luck in points
0.3 for Delaware
Luck-adjusted margin
Jacksonville State by 13.3
Replay with same day's form
Delaware 21% · Jacksonville State 79% 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 8 2025 games · Delaware · Jacksonville State

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Every week 8 game, 2025