luckadjusted
CFB Week 4 · 2026

Week 10 2025 · October 30, 2025

Marshall at Coastal Carolina, Week 10 2025: who deserved to win?

Coastal Carolina beat Marshall 44–27, and the replays back it up: with the way both teams actually played, Coastal Carolina wins 8 of 10.

An off day for Marshall: its offense played far below its usual level. In a fresh game against Coastal Carolina it would win 61% of the time; with this day’s form, 20%. The numbers

Before kickoff Marshall was a 68% favorite.

Final

Marshall Thundering Herd 27
Coastal Carolina Chanticleers 44

October 30, 2025 · Brooks Stadium (SC) · Closing line: Marshall −7

Luck index +20 Coastal Carolina about even · −20 Marshall

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. Marshall wins 2, Coastal Carolina wins 8.

  1. 1 MRSH 26 CCU 10
  2. 2 MRSH 27 CCU 21
  3. 3 MRSH 17 CCU 20
  4. 4 MRSH 31 CCU 38
  5. 5 MRSH 10 CCU 20
  6. 6 MRSH 23 CCU 37
  7. 7 MRSH 27 CCU 45
  8. 8 MRSH 26 CCU 48
  9. 9 MRSH 17 CCU 44
  10. 10 MRSH 14 CCU 53

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 Marshall

Its offense played far below its usual level. In a fresh game against Coastal Carolina it would win 61% of the time; with this day’s form, 20%.

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

UnitThis gameUsual levelBetter or worse than usual
Marshall offenseEPA per play gained −0.07 +0.08 worse by 0.15
Marshall defenseEPA per play allowed −0.01 +0.07 better by 0.08
Coastal Carolina offenseEPA per play gained −0.01 +0.10 worse by 0.11
Coastal Carolina defenseEPA per play allowed −0.07 +0.08 better by 0.16

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

Marshall wins 20% of them, Coastal Carolina 80%, counting the 1% still level after regulation as half each. The line is what actually happened: Coastal Carolina by 17.

Show as a table
Final margin in the replaysShare of replays
Marshall by 17+4.1%
Marshall by 9–165.8%
Marshall by 1–89.6%
Level after regulation1.1%
Coastal Carolina by 1–814.3%
Coastal Carolina by 9–1617.4%
Coastal Carolina by 17+47.6%

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 +0.4 points to Marshall: the final margin was Coastal Carolina by 17, without the luck Coastal Carolina by 17.4. 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.

  • K. Afrookhteh, 36 yds made · 81% expected
  • L. Quinn, 55 yds made · 45% expected
  • L. Quinn, 23 yds made · 93% expected
  • K. Afrookhteh, 42 yds made · 71% expected
  • K. Afrookhteh, 24 yds made · 94% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Marshall 8 for 70 yards, Coastal Carolina 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 9:55 Holding on Marshall, 10 yards +2% CCU +1.2 pts
Q1 5:27 Ineligible Downfield on Coastal Carolina, 5 yards, wiping out the play +2% MRSH +1.1 pts
Q2 14:05 Face Mask on Marshall, 5 yards +4% CCU +2.2 pts
Q2 6:49 Offside on Marshall, 5 yards · pre-snap +1% MRSH +0.6 pts
Q2 1:11 Holding on Marshall, 10 yards +1% CCU +0.4 pts
Q3 7:49 Holding on Marshall, 10 yards +2% CCU +0.6 pts
Q3 7:15 Personal Foul on Coastal Carolina, 15 yards +3% MRSH +0.9 pts
Q3 3:13 Holding on Marshall, 10 yards +1% CCU +0.6 pts
Q3 3:13 Offside on Coastal Carolina, 5 yards · pre-snap +1% MRSH +0.5 pts
Q4 15:00 Chop Block on Coastal Carolina, 15 yards +3% MRSH +1.5 pts
Q4 5:10 Unsportsmanlike Conduct on Marshall, 15 yards 0% CCU +0.9 pts
Q4 2:00 False Start on Marshall, 5 yards · pre-snap 0% CCU +0.2 pts

When it happened

Coastal Carolina’s chance of winning

As low as 12% 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 Coastal Carolina was ahead in it, below while Marshall was.
#WhenWhat happenedWin probability forNext drive
1 Q1 13:08 Coastal Carolina converted 3rd & 83rd & 4th downs · 31% expectedCoastal Carolina was stopped on 3rd & 33rd & 4th downs · 53% expectedReturn touchdown by MarshallSpecial teams +8% MRSH CCU: End of half
2 Q1 4:01 Marshall converted 3rd & 133rd & 4th downs · 20% expectedMarshall converted 3rd & 13rd & 4th downs · 74% expected +4% MRSH MRSH: End of half
3 Q3 12:46 Marshall converted 3rd & 63rd & 4th downs · 28% expected +5% MRSH MRSH: Turnover
4 Q3 11:16 Marshall fumbled and Coastal Carolina recoveredFumble bounces · loose balls are close to 50/50 +8% CCU MRSH: Turnover
5 Q3 7:56 K. Afrookhteh made a 42-yard field goalKicks · 71% expected for him +7% CCU CCU: Field goal
6 Q3 3:13 Marshall fumbled and recovered itFumble bounces · loose balls are close to 50/50Holding on Marshall, 10 yardsJudgment callsOffside on Coastal Carolina, 5 yardsPre-snap flags +6% MRSH MRSH: Turnover
7 Q3 0:11 Marshall fumbled and Coastal Carolina recoveredFumble bounces · loose balls are close to 50/50 +7% CCU MRSH: Punt
8 Q4 12:35 Marshall was stopped on 3rd & 43rd & 4th downs · 45% expected +6% CCU MRSH: 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

Marshall 1% · Coastal Carolina 99%

Final margin
Coastal Carolina by 17
Luck in points
0.4 for Marshall
Luck-adjusted margin
Coastal Carolina by 17.4
Replay with same day's form
Marshall 20% · Coastal Carolina 80% 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 10 2025 games · Marshall · Coastal Carolina

More from Week 10 2025

Every week 10 game, 2025