MiamisMoperiestMopes
MostlyMopery and **** posts
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- Nov 8, 2011
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ChatGPT’s analysis
That is a remarkable collapse, particularly because of how sustained the downward slope is. What stands out isn't simply that Florida State lost its advantage. It's that once the probability started falling, it almost never recovered.
Three things I find particularly interesting
1. The asymmetry is striking.
FSU's probability rises from roughly 50% to 90% through a series of relatively gradual increases. But the descent isn't a mirror image.
The first major downward adjustment is almost vertical, from approximately 85–90% to 65%. After that, the decline continues with remarkably little sustained upward movement.
2. There is almost no resistance on the way down.
Look at the second half of the graph. You see brief upward movements, but almost every one is followed by another decline.
In financial-chart terminology, this resembles a sequence of lower highs and lower lows.
That suggests Louisville wasn't simply benefiting from one enormous play. The win-probability model was repeatedly receiving new information that made an FSU victory less likely.
It looks like an extended loss of control rather than a single turning point.
3. The most damaging stretch is not necessarily the initial plunge.
FSU goes from approximately 90% to 50% during the second quarter. That's dramatic.
But going from 50% to 10% through the second and third quarters is arguably more revealing.
At 50%, FSU still has a competitive game. Yet the graph shows virtually no meaningful recovery after that point.
That's what makes the shape unusual: the team doesn't just surrender its advantage; it never establishes another sustained period of positive momentum.
The mathematical perspective
One interesting distinction: a drop from 90% to 50% isn't mathematically equivalent to a drop from 50% to 10%.
Expressed as odds:
90% probability = 9-to-1 odds of winning.
50% probability = 1-to-1.
10% probability = 1-to-9.
Each transition represents a ninefold deterioration in FSU's odds of winning.
So the two sections are equally substantial on a log-odds scale, despite looking different on the probability chart.
My biggest takeaway
What makes this graph fascinating is the persistence of the negative trajectory.
A normal back-and-forth football game produces something resembling a jagged sawtooth, even when one team eventually pulls away.
Here, after FSU peaks, the probability curve resembles a descending staircase with very few upward steps.
One qualification: win probability is influenced by score, possession, field position, and remaining time. A trailing team's probability can steadily decline simply because the clock is running out. So we cannot attribute every downward movement to poor execution without examining the play-by-play.
But the sustained descent beginning while FSU still had a substantial advantage is particularly notable.
I'd be interested in measuring the longest sustained decline in win probability without a meaningful recovery. Not just total probability lost, but how long a team goes without recovering, say, 10 percentage points from a local low.
That would distinguish a dramatic comeback from a genuine, prolonged collapse.