luckadjusted
CFB Week 4 · 2026

Week 4 2026 · September 25, 2026

Clemson at California, Week 4 2026: who deserved to win?

Clemson beat California 24–10, and the replays lean its way: with the same day's form, it wins 7 of 10.

Before kickoff Clemson was a 56% favorite. The biggest swing (Q4, 13:20 left): Pass Interference on California, 15 yards, wiping out the play, worth 11 points of win probability to Clemson.

Final

Clemson Tigers 24
California Golden Bears 10

September 25, 2026 · California Memorial Stadium · Closing line: Clemson −2.5

Luck index +27 Clemson lucky · −27 California

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. Clemson wins 7, California wins 3.

  1. 1 CLEM 35 CAL 7
  2. 2 CLEM 20 CAL 0
  3. 3 CLEM 16 CAL 0
  4. 4 CLEM 13 CAL 0
  5. 5 CLEM 27 CAL 17
  6. 6 CLEM 7 CAL 0
  7. 7 CLEM 10 CAL 7
  8. 8 CLEM 0 CAL 3
  9. 9 CLEM 28 CAL 35
  10. 10 CLEM 3 CAL 19

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

Clemson wins 73% of them, California 27%, counting the 7% still level after regulation as half each. The line is what actually happened: Clemson by 14.

Show as a table
Final margin in the replaysShare of replays
Clemson by 17+24.8%
Clemson by 9–1621.8%
Clemson by 1–822.8%
Level after regulation7.1%
California by 1–814.3%
California by 9–166.6%
California by 17+2.7%

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 +10.1 points to Clemson: the final margin was Clemson by 14, without the luck Clemson by 3.9. 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.

  • N. Hauser, 30 yds made · 88% expected
  • C. Meyer, 51 yds missed · 52% expected
  • C. Meyer, 30 yds made · 85% expected
  • N. Hauser, 48 yds missed · 59% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Clemson 6 for 63 yards, California 7 for 51 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 12:34 Pass Interference on Clemson, 13 yards +4% CAL +1.8 pts
Q1 10:35 Holding on Clemson, 10 yards, wiping out the play +4% CAL +1.7 pts
Q1 8:49 Personal Foul on Clemson, 15 yards +2% CAL +0.8 pts
Q1 2:07 Personal Foul on California, 5 yards +2% CLEM +1.0 pts
Q1 1:28 False Start on Clemson, 5 yards · pre-snap +2% CAL +1.1 pts
Q2 10:44 Offside on California, 5 yards · pre-snap +8% CLEM +3.3 pts
Q2 6:16 Unnecessary Roughness on California, 1 yard +2% CLEM +0.8 pts
Q2 1:53 Holding on Clemson, 10 yards +4% CAL +1.3 pts
Q2 1:48 Holding on California, 10 yards +4% CLEM +1.5 pts
Q2 1:17 Holding on Clemson, 10 yards +2% CAL +1.0 pts
Q4 14:53 Offside on California, 5 yards · pre-snap +1% CLEM +0.2 pts
Q4 13:20 Pass Interference on California, 15 yards, wiping out the play +11% CLEM +4.0 pts
Q4 8:18 Holding on California, 10 yards +2% CLEM +0.6 pts

When it happened

California’s chance of winning

As low as 0% and as high as 61%. 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 California was ahead in it, below while Clemson was.
#WhenWhat happenedWin probability forNext drive
1 Q2 10:44 Offside on California, 5 yardsPre-snap flags +8% CLEM CLEM: Touchdown
2 Q2 8:42 Clemson converted 4th & 23rd & 4th downs · 59% expected +6% CLEM CLEM: Touchdown
3 Q2 7:13 Clemson converted 4th & 13rd & 4th downs · 66% expected +5% CLEM CLEM: Touchdown
4 Q2 1:29 C. Meyer missed a 51-yard field goalKicks · 52% expected for him, 1 of 2 from 45+ before +5% CLEM CAL: End of half
5 Q3 9:26 California was stopped on 3rd & 43rd & 4th downs · 46% expected +4% CLEM CAL: Field goal
6 Q3 7:53 Clemson converted 3rd & 43rd & 4th downs · 43% expected +6% CLEM CLEM: Punt
7 Q4 13:20 Pass Interference on California, 15 yards, wiping out the playJudgment calls +11% CLEM CLEM: Missed field goal
8 Q4 9:14 N. Hauser missed a 48-yard field goalKicks · 59% expected for him, 10 of 14 from 45+ before +6% CAL CLEM: Touchdown

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

Clemson 70% · California 30%

Final margin
Clemson by 14
Luck in points
10.1 for Clemson
Luck-adjusted margin
Clemson by 3.9
Replay with same day's form
Clemson 73% · California 27% 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 · Clemson · California

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