Derek Cox ranks in the all-time elite tier for defensive backs — a career that places Cox in the top 10% of all players at the position. The Knox value model assigns Cox a career score of 69, reflecting sustained impact that most players at the position never approach.

CBSD#22ACT

Derek Cox

Top 10% all-time defensive backsElite Playmaker🌅 Early Bloomer · 2010 Team Carrier · #201

Height6'1"

Weight195 lb

BornSep 22, 1986

Age39

CollegeWilliam & Mary See College Stats

Rookie yr2009

Draft2009 · Rd 3, Pick 73 · JAX

Team Carrier Evidence

Ranked #201 of 600 by seasons where high individual production happened on low-win teams. Score aggregates only tracked StatVault categories.

Full board

Total Score

1 qualifying season

2012 JAX·2 team wins#16

Interceptions · 4 · score 50

All-Time Standing

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

Depth

of 100

Reached 5% of the all-time Interceptions leader — a rotational/depth all-time profile at the position.

5% of the all-time Interceptions leader

Career Value · VORP

88 career value over replacement — #1311 all-time of 4,649. 22/season above a replacement-level CB.

Draft OutcomeSteal ↑

Pick #73 (Rd 3) · JAX · 2009 · +28.8 vs expected KV-H

69actual

40.2 expected · Δ+28.8

Fan Rating

Rate Derek Cox — All-Time

Tap a star to rate

Explore More

Similar Players

Tony Lippett

92% match

Melvin Bullitt

91% match

Paulson Adebo

91% match

Charles Mincy

90% match

Sherrod Martin

90% match

Compare Derek Cox vs Player Report data error

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 Coverage6/8 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)Offensive, defensive, and special-teams snap counts with team-share percentages. Essential for OL and situational players. Source: nflverse snap_counts.

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.

Career Aging Trajectory

vs. position group average · KV-H basis

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

Understanding These Stats

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.

Snap Counts (2012–present)

Off / Off% — Offensive snaps played and share of team total. The most reliable usage metric for skill positions and OL.

Def / Def% — Defensive snaps played and share of team total.

ST / ST% — Special-teams snaps played and share of team total.

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.

Postseason Career

2 playoff games

Snap Counts

ST10ST%22.0%

College Stats

William & MaryCollege listed; stat table pending import

College stats are not imported for this profile yet.

StatVault has the verified college attribution (William & Mary), 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.

Movementderived from season history

2013team change
Joined SD (from JAX)
2013final season
Last recorded season with SD
2009draft
Drafted by JAX — Round 3, Pick 73

Athletic & Unique Profile

verified measurements and curated source-tagged facts

6'1" / 195 lb

Frame

Injury History

3 career games missed (Out)

From nflverse weekly injury reports · coverage begins 2009.

Season	Team	Games Out	Designations
2012	JAX	1	W1Doubtful· HamstringW2Questionable· HamstringW8Questionable· BackW9Questionable· BackW13Out· Hamstring
2011	JAX	2	W2Out· ChestW4Doubtful· GroinW5Out· GroinW6Doubtful· Groin

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 4-season peers. See all →

peak 78

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

B+2009

A2010

F2011

A2012

Availability

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

78%

20092013

2011 · Chest · 38%

Durability IQ

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

Durable

Era Translator

INT 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 INT	INT/G	→ 2025 INT	→ 2025 /G
2009	4	0.3	3-1	0.2
2010	4	0.3	5+1	0.3
2011	0	0	0	0
2012	4	0.3	5+1	0.3

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