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A living notebook by Riel St. Amand
The reproducible trail for the phantom pressure profile. Built on the public qb_pocket_season view: clean-pocket bails split by what they earned.
Every cell re-runs in your browser against current data. Covers 1999 through 2025. Data refreshed 1 day ago.
We asked: who leaves clean pockets, and what does it cost?
Strange fact that started it: across 2023 to 2025, charters recorded 4,203 sacks and exactly two from a clean pocket. By the time a sack lands there is always pressure to record, so we measured the moment before: every scramble or throwaway on a dropback charted as unpressured (screens and trick plays excluded). A bail that gained expected points is creation; one that lost them is panic.
Within a season, does panic travel with sacks? The cell below runs the same-season association between panic rate and sack rate, live, across all charted QB seasons with 150+ clean dropbacks.
Rigor check
Clean panic rate against Sack rate
Pearson correlation, re-run in your browser on current data.
The year-over-year claims need a season self-join (this view is one row per QB season): creation repeats at r 0.65, panic at only 0.19, yet panic predicts next-season sack rate at 0.28 against a 0.15 sack-rate autocorrelation. Suggestive, not proven, on 52 pairs; the bootstrap and the 2026 pre-registered re-test are in the article backtest block. The view is public, so anyone can extend the join.
Built on data from the nflverse project.