For running backs especially, opportunity is destiny. A back cannot score on carries he does not get, and the size and security of his workload is the single most predictive thing about his fantasy season. These four rules read that workload from different angles — how much of the backfield a player owns, whether his role is growing or shrinking, and whether last year's workload was so heavy it becomes a warning sign.
Fires when a running back's carry share is under 50% of his team's carries.
A back who handles fewer than half of his team's carries is, by definition, in a committee — and committees cap fantasy ceilings in two ways at once. The obvious one is fewer touches. The subtler one is volatility: in a timeshare, the split can shift week to week on matchup, game script, or a hot hand, so even the projected touches carry more risk than a bell-cow's. The 50% line is the natural boundary between a lead back and a true committee; below it, AutoTiers trims 15% off the projection to reflect both the lower volume and the lower reliability.
Fires when a player's offensive snap share falls under 55%.
Snap share is the broadest measure of a role because it counts every play a player is on the field for, not just the ones the ball finds him. Falling under 55% of snaps usually means the offense is trusting a player less — a rotation, a committee, a rookie eating into the veteran's series. Because production is downstream of being on the field, a shrinking snap share is often the earliest visible sign of a shrinking fantasy role, and AutoTiers applies a modest 10% penalty when it appears. It is available for running backs, receivers, and tight ends.
Fires when a running back's carry share is under 30%.
This rule changes no scores — it is purely informational. A back under 30% carry share is a backup or change-of-pace piece today, but the ones sitting behind a workhorse are exactly the players who become league-winners the moment the starter is hurt. Flagging them helps you spot the high-value handcuffs to target late without pretending their current projection is anything but small. It is the low-volume companion to the committee penalty above.
Fires when a running back is 26 or younger and absorbed 370+ touches (carries plus receptions) last season.
The "370-touch curse" is one of the oldest observations in fantasy: backs who carry an enormous workload tend to decline the following year, worn down by the cumulative hits. But recent workload studies show the effect is age-conditioned, not flat — young backs recover far better than old ones. Backs first absorbing a monster load in their early twenties decline roughly 24% in next-year points per game on average, versus roughly 37% for backs 27 and up. So AutoTiers splits the rule into two age bands. For the young band it applies a milder 13% penalty, because the body still bounces back.
Fires when a running back is 27 or older and absorbed 370+ touches last season.
Same gate, steeper cliff. For older backs the workhorse curse is severe: across a decade of 350+ touch seasons, only a handful of backs beat their prior year's per-game scoring the next season. The veteran band applies a 25% penalty. There is one deliberate subtlety worth knowing: for a back 28 or older, this penalty is designed to stack with the Over the Hill age penalty, landing around a combined −36%. That compounding is intentional and was tuned to stay under the ceiling where two penalties would start double-counting the same aging story. The published coefficients are damped from the raw study numbers precisely because the base projection already prices in some of the expected decline.
Note that both 370-touch bands are contiguous — every age fires exactly one of them, never both and never neither — and a back whose age is unknown fires neither, because guessing an age band on missing data is worse than skipping the penalty. A true 370-touch workhorse essentially always has a known age.
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