Proprietary · Snap Impact Score
The box score is opportunity-blind — a receiver with 900 yards on 850 snaps and one with 900 yards on 500 snaps look identical in totals, but the second is far more dangerous per opportunity. SIS measures production per snap, z-scored within position so a rotational pass-rusher is compared to an every-down star fairly.
How to read Snap Impact Score (SIS)
What the number means
How it is built
Compare within position first. A 78 edge rusher and a 78 receiver both stand out, but their inputs are position-specific.
Reliability is sample context. Elite/Consistent/Reliable/Volatile/Emerging describes how stable the sample is, not just how good the player is.
Coverage: Snap counts begin in 2012; players whose careers predate the snap era do not receive a Snap Impact Score. 3,476 players cleared the 500-snap floor.
Each dot is a player. The four zones reveal archetypes invisible to ranked lists: elite all-rounders land in the top-right; rotational specialists in the top-left; volume players in the bottom-right; depth players in the bottom-left.
X = snap share · Y = SIS (position-calibrated)
nflverse snap counts (CC-BY) · StatVault-original metric.
Rankings as of 2026-10-15, as declared by the corpus that produced them.