luckadjusted
CFB Week 4 · 2026

Week 4 2026 · September 26, 2026

Middle Tennessee at Jacksonville State, Week 4 2026: who deserved to win?

Jacksonville State beat Middle Tennessee 23–13, and the replays back it up: with the way both teams actually played, Jacksonville State wins 10 of 10.

Before kickoff Jacksonville State was a 68% favorite.

Final

Middle Tennessee Blue Raiders 13
Jacksonville State Gamecocks 23

September 26, 2026 · AmFirst Stadium · Closing line: Jacksonville State −7

Luck index +2 Jacksonville State about even · −2 Middle Tennessee

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. Middle Tennessee wins 0, Jacksonville State wins 10.

  1. 1 MTSU 21 JXST 27
  2. 2 MTSU 14 JXST 24
  3. 3 MTSU 28 JXST 42
  4. 4 MTSU 35 JXST 55
  5. 5 MTSU 20 JXST 42
  6. 6 MTSU 16 JXST 42
  7. 7 MTSU 20 JXST 49
  8. 8 MTSU 10 JXST 44
  9. 9 MTSU 10 JXST 48
  10. 10 MTSU 10 JXST 56

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

Middle Tennessee wins 2% of them, Jacksonville State 98%, counting the 1% still level after regulation as half each. The line is what actually happened: Jacksonville State by 10.

Show as a table
Final margin in the replaysShare of replays
Middle Tennessee by 17+0.2%
Middle Tennessee by 9–160.4%
Middle Tennessee by 1–81.1%
Level after regulation0.7%
Jacksonville State by 1–86.0%
Jacksonville State by 9–1610.9%
Jacksonville State by 17+80.6%

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 +1.0 points to Middle Tennessee: the final margin was Jacksonville State by 10, without the luck Jacksonville State by 11. 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, 27 yds made · 89% expected
  • G. Rippa, 31 yds made · 85% expected
  • G. Rippa, 29 yds made · 87% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Middle Tennessee 7 for 69 yards, Jacksonville State 3 for 30 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 8:30 Pass Interference on Jacksonville State, 10 yards +2% MTSU +1.4 pts
Q1 7:27 Ineligible Downfield on Jacksonville State, 5 yards, wiping out the play +7% MTSU +3.8 pts
Q1 7:27 Offside on Middle Tennessee, 5 yards · pre-snap +1% JXST +0.6 pts
Q1 7:14 Face Mask on Jacksonville State, 15 yards +3% MTSU +1.6 pts
Q2 13:35 Holding on Middle Tennessee, 10 yards, wiping out the play 0% JXST +0.1 pts
Q2 6:44 Holding on Middle Tennessee, 10 yards +1% JXST +0.6 pts
Q2 6:44 Holding on Middle Tennessee, 10 yards +1% JXST +0.6 pts
Q2 6:44 False Start on Middle Tennessee, 5 yards · pre-snap +1% JXST +0.8 pts
Q2 0:23 Unsportsmanlike Conduct on Middle Tennessee, 15 yards +2% JXST +0.9 pts
Q4 1:48 Intentional Grounding on Middle Tennessee, 14 yards +1% JXST +0.9 pts

When it happened

Jacksonville State’s chance of winning

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 Middle Tennessee was.
#WhenWhat happenedWin probability forNext drive
1 Q1 7:27 Jacksonville State was stopped on 3rd & 93rd & 4th downs · 25% expectedIneligible Downfield on Jacksonville State, 5 yards, wiping out the playJudgment callsOffside on Middle Tennessee, 5 yardsPre-snap flags +8% MTSU JXST: Field goal
2 Q1 7:14 Middle Tennessee was stopped on 3rd & 163rd & 4th downs · 19% expectedG. Rippa made a 27-yard field goalKicks · 89% expected for himFace Mask on Jacksonville State, 15 yardsJudgment calls +8% MTSU MTSU: Punt
3 Q2 0:27 Middle Tennessee converted 3rd & 23rd & 4th downs · 55% expected +3% MTSU MTSU: Touchdown
4 Q3 13:19 Middle Tennessee converted 3rd & 43rd & 4th downs · 47% expected +4% MTSU MTSU: Touchdown
5 Q3 12:24 Middle Tennessee fumbled and recovered itFumble bounces · loose balls are close to 50/50 +5% MTSU MTSU: Touchdown
6 Q3 10:47 Middle Tennessee converted 4th & 23rd & 4th downs · 62% expected +6% MTSU MTSU: Touchdown
7 Q3 10:11 Jacksonville State converted 3rd & 33rd & 4th downs · 56% expectedMiddle Tennessee’s two-point try failed3rd & 4th downs · 46% expected +7% JXST JXST: Field goal
8 Q4 13:29 Middle Tennessee converted 3rd & 43rd & 4th downs · 47% expected +4% MTSU MTSU: Punt

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

Middle Tennessee 2% · Jacksonville State 98%

Final margin
Jacksonville State by 10
Luck in points
1.0 for Middle Tennessee
Luck-adjusted margin
Jacksonville State by 11.0
Replay with same day's form
Middle Tennessee 2% · Jacksonville State 98% 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 · Middle Tennessee · Jacksonville State

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