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

RBHOU#34RES

Stacey Mack

Top 37% all-time RBsReliable StarterTeam Carrier · #253

Height6'1"

Weight241 lb

BornJun 26, 1975

Age51

CollegeTemple; Southwest Mississippi JC See College Stats

Rookie yr

Team Carrier Evidence

Ranked #253 of 600 by seasons where high individual production happened on low-win teams. Score aggregates only tracked StatVault categories.

Full board

Total Score

3 qualifying seasons

2001 JAX·6 team wins#10

Rushing Touchdowns · 9 · score 16

2002 JAX·6 team wins#12

Rushing Touchdowns · 9 · score 14

2001 JAX

Career Value · VORP

30 career value over replacement — #2686 all-time of 4,649. 10/season above a replacement-level RB.

Career Profile

1 top-10 seasonstop-10 marks

Fan Rating

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Compare Stacey Mack vs Player Report data error

Rushing Yards · 877 · score 9

All-Time Standing

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

Depth

of 100

Reached 14% of the all-time Rushing Touchdowns leader — a rotational/depth all-time profile at the position.

14% of the all-time Rushing Touchdowns leader14

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: 91%.

Encyclopedia Coverage4/8 data layers

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 StatsNot available for this player

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.

Career Aging Trajectory

vs. position group average · KV-H basis

Amber = this player (normalized to own peak). Indigo = average RBs aging curve. Group peak age: 21. Source: StatVault KV-H era (1999+).

Understanding These Stats

Passing

Cmp / Att — Completions and pass attempts.

Cmp% — Completion percentage — completions ÷ attempts × 100.

Yds — Passing yards — total air + yards after catch on completions.

TD / TD% — Passing touchdowns. TD% = TDs per 100 attempts, measuring scoring efficiency.

Int / Int% — Interceptions thrown. Int% = INTs per 100 attempts — the primary ball-security metric.

Y/A — Yards per attempt — passing yards ÷ attempts. The core passing efficiency rate.

AdjY/A — Adjusted yards per attempt: (Pass Yds + 20×TD − 45×INT) ÷ Att. Penalizes turnovers and rewards touchdowns — widely considered the most predictive single-season QB metric.

TD:INT — TD-to-interception ratio — passing touchdowns ÷ interceptions thrown. Elite QBs sustain career ratios above 3.0; HOF greats often exceed 4.0. Not shown when no interceptions.

Rate — NFL passer rating — the official formula combining Cmp%, Y/A, TD%, and INT% on a 0–158.3 scale. Good QB performance ≈ 90+; elite ≈ 110+.

Sk — Times sacked — how many times the QB was brought down behind the line of scrimmage.

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.

College Stats

Temple; Southwest Mississippi JCCollege listed; stat table pending import

College stats are not imported for this profile yet.

StatVault has the verified college attribution (Temple; Southwest Mississippi JC), but no parsed college box-score table is present in this profile artifact. The section stays here so every profile has a consistent college-stats landing point without fabricating unavailable rows.

Franchise Succession

the room, before and after

Stacey inherited the Jacksonville Jaguars RB room from Fred Taylor (1998–2008), and handed it to LaBrandon Toefield (2003–2007).

Daimon Shelton 1997–2000Fred Taylor 1998–2008Stacey Mack 1999–2002LaBrandon Toefield 2003–2007Maurice Jones-Drew 2006–2013Rashad Jennings 2009–2012Jordan Todman 2012–2014Denard Robinson 2013–2016T.J. Yeldon 2015–2018Chris Ivory 2016–2017Leonard Fournette 2017–2019Carlos Hyde 2018–2021Travis Etienne 2022–2025Tank Bigsby 2023–2025

The room is reconstructed from arrival order among durable members (≥4 seasons with the club) at the player’s position group — a lineage by arrival, not a week-by-week depth chart. Distinct from the league-wide positional GOAT torch.

Movementderived from season history

2003team change
Joined HOU (from JAX)
2003final season
Last recorded season with HOU
1999signing
Entered the NFL with JAX

Athletic & Unique Profile

verified measurements and curated source-tagged facts

6'1" / 241 lb

Frame

Knox

StatVault's proprietary player intelligence, informed by full career data. How Knox works →

Historical Knox · KV-H

Era-normalized career quality — z-scored against 3-season peers. See all →

peak 60

Season Report Cards· KV-H era-normalized per season

B+2001

C+2002

C+2003

Availability

Career durability — games played vs. scheduled, across 5 seasons.

81%

19992003

1999 · backup · 2/16 G2000 · backup · 3/16 G

2003 · cause not documented · 50%

Durability IQ

Composite score across availability, IR frequency, and injury severity. See all →

Durable

Era Translator

Rush Yds translated to the 2025NFL — each season's standing among its own-era peers, projected onto 2025's scoring environment. Modern-era (1999+) coverage.

Season	Actual Rush Yds	Rush Yds/G	→ 2025 Rush Yds	→ 2025 /G
2001	877	54.8	957+80	56.3
2002	436	29.1	566+130	33.3
2003	253	31.6	580+327	34.1

Data: nflverse:players, nflverse:player_stats, nflverse:player_stats_def · multi-source verified via the StatVault Oracle · updated 7/31/2026