Butch Woolfolk is a career quality starter — a running back whose body of work places Woolfolk in the top quarter of all players at the position historically. The Knox model values sustained contribution over flash, and Woolfolk's career arc reflects exactly that kind of reliable professional-grade performance.

RBDET#0ACT

Butch Woolfolk

Top 18% all-time RBsElite PlaymakerTwo-Way Profile

Height6'1"

Weight210 lb

BornMar 1, 1960

Age66

CollegeMichigan See College Stats

Rookie yr1982

All-Time Standing

how this career measures against the all-time greats at the position

Depth

of 100

Reached 12% of the all-time Receptions leader — a rotational/depth all-time profile at the position.

12% of the all-time Receptions leader12

0 categories ≥25% of the all-time leader0

A 0–100 scale where 100 = matched the all-time leaderat this position. Built only from visible encyclopedia data — career production vs. the all-time leader, plus efficiency (EPA) and comparable-player confidence — so it's a transparent context score, not a subjective rating. Tiers: Elite ≥ 85 · Strong ≥ 65 · Solid ≥ 45 · Depth < 45. Comparable-player confidence: 88%.

Encyclopedia Coverage

Career Value · VORP

57 career value over replacement — #1889 all-time of 4,649. 9.5/season above a replacement-level RB.

Draft OutcomeValue ↑

Pick #18 (Rd 1) · NYG · 1982 · +7.3 vs expected KV-H

63actual

55.7 expected · Δ+7.3

Fan Rating

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Compare Butch Woolfolk vs Player Report data error

StatVault aggregates multiple open-licensed and proprietary sources into a single profile. The depth indicator above shows which layers are available for this player.

Bio & DraftBirth date, height/weight, draft round/pick, college — sourced from nflverse players.csv (CC-BY 4.0). Covers all NFL eras.

Season Stats (1999–present)Week-by-week box scores aggregated to season totals: passing, rushing, receiving, defense. Source: nflverse player_stats. Counting stats are exact; rates are derived.

Advanced (EPA, 1999–present)Not available for this player

Snap Counts (2012–present)Not available for this player

Defensive StatsMaterial defensive production only: playmaking stats, 10+ tackles, or 50+ defensive snaps. Source: nflverse player_stats and snap_counts.

College StatsCollege attribution is present, but this profile artifact does not yet carry a parsed college stat table.

NFL Combine / Pro DayNot available for this player

Proprietary LayersKV-H (Knox Value-Historical) — era-normalized career rating 0–100 calibrated within position group (1999+ coverage). SIS (Snap Impact Score, 2012+) — per-snap production z-scored within position. VORP — value over replacement player. Durability IQ — games-played percentile adjusted for era.

Pre-1999 players have bio + draft data but counting stats are not available from any freely-licensed source. Players with ★ Career Only see verified career aggregates from nflverse draft_picks.

Understanding These Stats

Rushing

Att — Rushing attempts (carries).

Yds — Rushing yards.

TD — Rushing touchdowns.

Y/A — Yards per carry — rushing yards ÷ carries. The core rushing efficiency rate; 4.5+ is solid, 5+ is elite.

TD% — Touchdown rate per carry (TDs ÷ carries × 100) — measures scoring efficiency per touch independent of volume. Red-zone workhorses lead here.

1D — First downs gained on rushing plays.

1D% — First-down conversion rate (first downs ÷ carries × 100) — how often a carry moves the chains. Top RBs convert on 25%+ of attempts.

Fmb — Rushing fumbles lost — the key ball-security stat for running backs. Below 1 per season is elite.

Receiving

Tgt — Targets — how many times the receiver was thrown to, regardless of completion.

Rec — Receptions — catches made.

Yds — Receiving yards.

TD — Receiving touchdowns.

Ctch% — Catch rate — receptions ÷ targets × 100. Measures how reliably a receiver turns opportunities into gains. 70%+ is elite.

Y/R — Yards per reception — receiving yards ÷ receptions. Measures big-play ability; 15+ is elite for WRs.

Y/Tgt — Yards per target — receiving yards ÷ targets. The single most complete receiving efficiency metric: accounts for both drops and incomplete targets. Elite receivers post 8+ yards per target.

AirYd/T — Air yards per target — average depth of route at time of target. High values indicate a deep threat role; low values indicate a slot/check-down role.

1D — First downs gained on receiving plays.

Defense

Tkl / Solo / Ast — Combined tackles (Solo + ½ Assist). Solo = unassisted. Ast = helped by a teammate.

TFL — Tackles for loss — stops made behind the line of scrimmage (run stuffs + QB contain).

QBHits — QB hits — any legal contact on the quarterback, including but beyond sacks (hurries that land).

Sk — Sacks — tackled the QB behind the line for a loss. Half-sacks shared between defenders.

Dis — Disruption plays = sacks + QB hits + TFL. The composite pass-rush / run-stop impact stat for one season. Elite pass rushers post 30+ disruption plays per season.

Int — Interceptions caught by this defender.

PD — Passes defended — deflections and breakups.

FF / FR — Forced fumbles (stripped or jarred loose). Fumble Recoveries.

TD — Defensive touchdowns — picks, fumble returns, safeties returned.

Sfty — Safeties — tackled the ball carrier in their own end zone.

Proprietary StatVault Metrics

KV-H (Knox Value-Historical) — Era-normalized career rating 0–100 within position group, calibrated so a 50 = average starter and 90+ = all-time great. Covers 1999–present. Built on a 5-year IQR/robust-std era window.

SIS (Snap Impact Score) — Per-snap production z-scored within position group and era (2012+). Measures how much a player produced per opportunity, not raw volume.

VORP (Value Over Replacement) — Sum of max(0, season KV-H − positional replacement level) across a career. Measures career value above the minimum-roster baseline at each position.

Durability IQ — 0–100 score reflecting how many games a player played relative to peers at the same position in the same era. Adjusts for injury-shortened seasons.