luckadjusted
CFB Week 4 · 2026

Week 12 2025 · November 15, 2025

Georgia Tech at Boston College, Week 12 2025: who deserved to win?

Georgia Tech beat Boston College 36–34, and the replays lean its way: with the same day's form, it wins 7 of 10.

Before kickoff Georgia Tech was an 86% favorite. The biggest swing (Q4, 5:13 left): Boston College converted 3rd & 19, worth 11 points of win probability to Boston College.

Final

Georgia Tech Yellow Jackets 36
Boston College Eagles 34

November 15, 2025 · Alumni Stadium (Chestnut Hill, MA) · Closing line: Georgia Tech −16.5

Luck index +30 Georgia Tech lucky · −30 Boston College

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. Georgia Tech wins 7, Boston College wins 3.

  1. 1 GT 70 BC 35
  2. 2 GT 56 BC 31
  3. 3 GT 52 BC 31
  4. 4 GT 39 BC 24
  5. 5 GT 38 BC 28
  6. 6 GT 38 BC 31
  7. 7 GT 35 BC 33
  8. 8 GT 49 BC 52
  9. 9 GT 35 BC 45
  10. 10 GT 28 BC 48

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

Georgia Tech wins 70% of them, Boston College 30%, counting the 6% still level after regulation as half each. The line is what actually happened: Georgia Tech by 2.

Show as a table
Final margin in the replaysShare of replays
Georgia Tech by 17+30.9%
Georgia Tech by 9–1617.5%
Georgia Tech by 1–819.0%
Level after regulation5.8%
Boston College by 1–814.1%
Boston College by 9–167.1%
Boston College by 17+5.6%

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 +4.6 points to Boston College: the final margin was Georgia Tech by 2, without the luck Georgia Tech by 6.6. 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.

  • A. Birr, 49 yds missed · 59% expected
  • A. Birr, 34 yds made · 84% expected
  • A. Birr, 26 yds made · 93% expected
  • A. Birr, 23 yds made · 95% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

Penalties: Georgia Tech 6 for 34 yards, Boston College 3 for 25 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 12:22 False Start on Georgia Tech, 5 yards · pre-snap +1% BC +0.5 pts
Q1 3:25 Offside on Georgia Tech, 5 yards · pre-snap +1% BC +1.0 pts
Q2 9:02 Holding on Georgia Tech, 10 yards +1% BC +1.3 pts
Q2 6:05 Illegal Touching on Boston College, 5 yards, wiping out the play +3% GT +2.7 pts
Q2 0:36 False Start on Boston College, 5 yards · pre-snap 0% GT +0.4 pts
Q2 0:26 Roughing the Passer on Georgia Tech, 4 yards +1% BC +1.0 pts
Q3 1:19 False Start on Georgia Tech, 5 yards · pre-snap 0% BC +0.7 pts
Q3 0:07 Unsportsmanlike Conduct on Boston College, 15 yards +6% GT +1.6 pts
Q4 0:04 Illegal Substitution on Georgia Tech, 5 yards · pre-snap 0% BC +0.6 pts

When it happened

Boston College’s chance of winning

As low as 0% and as high as 80%. 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 Boston College was ahead in it, below while Georgia Tech was.
#WhenWhat happenedWin probability forNext drive
1 Q3 4:40 Georgia Tech was stopped on 3rd & 43rd & 4th downs · 52% expected +6% BC GT: Field goal
2 Q3 0:23 Georgia Tech converted 3rd & 153rd & 4th downs · 24% expected +10% GT GT: Field goal
3 Q3 0:07 Unsportsmanlike Conduct on Boston College, 15 yardsJudgment calls +6% GT GT: Field goal
4 Q4 9:19 Georgia Tech converted 3rd & 63rd & 4th downs · 43% expected +8% GT GT: Touchdown
5 Q4 7:33 Georgia Tech’s two-point try failed3rd & 4th downs · 46% expected +6% BC GT: Touchdown
6 Q4 5:13 Boston College converted 3rd & 193rd & 4th downs · 18% expected +11% BC BC: Touchdown
7 Q4 4:09 Boston College’s two-point try failed3rd & 4th downs · 46% expected +7% GT BC: End of game
8 Q4 3:19 Georgia Tech converted 3rd & 23rd & 4th downs · 68% expected +6% GT GT: Field goal

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

Georgia Tech 89% · Boston College 11%

Final margin
Georgia Tech by 2
Luck in points
4.6 for Boston College
Luck-adjusted margin
Georgia Tech by 6.6
Replay with same day's form
Georgia Tech 70% · Boston College 30% 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 12 2025 games · Georgia Tech · Boston College

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