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

DTJAX#99ACT

Sen'Derrick Marks

Top 26% all-time pass rushersHigh-End Starter📈 Late Developer · 2014 Team Carrier · #513

Height6'2"

Weight309 lb

BornFeb 23, 1987

Age39

CollegeAuburn See College Stats

Rookie yr2009

Draft2009 · Rd 2, Pick 62 · TEN

Archetype Intelligence

High-End StarterExplore archetypes →

A quality edge rusher with a top 30% among starters — a legitimate starter who contributed meaningfully across their career.

Career Value · VORP

VORP 72 · #1591 · Above Average

Worth 72 points of value above a freely-available replacement interior lineman — top 35% of all 4,642 ranked at the position. 5 of 8 seasons cleared the replacement bar, by +14.4 on average.See board →

Seasons above replacement

5 cleared

3 replaced

Beat replacement (adds to VORP) Below it — adds 0, never a debit

Replacement

the KC-H bar

→

Seasons over

cleared the bar

+14.4

Avg surplus

peak +33

5 seasons × ~14.4 surplus ≈ VORP 72

Combined Season Grid

The full season-by-season grids, joined on one timeline. Every selected stat family stays visible at once—no tab hopping.

2 grids split in one view

Season	Age	Team	G	GS	Defense													Snap Counts
Season	Age	Team	G	GS	Tkl	Solo	Ast	TFL	QBHits	Sk	Dis	Int	PD	FF	FR	TD	Sfty	Off	Off%	Def	Def%	ST	ST%
2009	—	TEN	6	—	10	5	5	1	2	1.0	4.0	0	1	0	—	0	0	—	—	—	—	—	—
2010	—	TEN	11	—	17	9	8	2	6	0.0	8.0	1	3	1	—	0	0	—	—	—	—	—	—
2011	—	TEN	15	—	21	12	9	2	3	0.5	5.5	0	1	1	—	0	0	—	—	—	—	—	—
2012	—	TEN	14	—	40	29	11	3	6	1.5	10.5	0	3	1	—	0	0	—	—	—	—	—	—
2013	—	JAX	16	—	31	25	6	6	10	4.0	20.0	0	8	2	3	0	0	—	0.0%	932	83.4%	89	19.3%
2014	—	JAX	16	—	42	32	10	15	18	8.5	41.5	0	3	0	1	0	0	—	0.0%	718	64.4%	65	14.1%
2015	—	JAX	4	—	6	4	2	2	0	0.0	2.0	0	3	0	—	0	0	—	0.0%	144	51.3%	—	0.0%
2016	—	JAX	14	—	22	18	4	7	9	3.5	19.5	0	1	0	1	0	0	—	0.0%	540	50.5%	79	16.5%
Career		—	96	—	189	134	55	38	54	19.0	111.0	1	23	5	5	0	0	—	0.0%	2,334	62.4%	233	16.6%

Defense

Season	Age	Team	G	GS	Tkl	Solo	Ast	TFL	QBHits	Sk	Dis	Int	PD	FF	FR	VAL
2009	22	TEN	6	—	10	5	5	1	2	1.0	4.0	0	1	0	—	3.2
2010	23	TEN	11	—	17	9	8	2	6	0.0	8.0	1	3	1	—	5.9
2011	24	TEN	15	—	21	12	9	2	3	0.5	5.5	0	1	1	—	6.7
2012	25	TEN	14	—	40	29	11	3	6	1.5	10.5	0	3	1	—	8.3
2013	26	JAX	16	13*	31	25	6	6	10	4.0	20.0	0	8	2	3	11.8
2014	27	JAX	16	10*	42	32	10	15	18	8.5	41.5	0	3	0	1	17.2
2015	28	JAX	4	2*	6	4	2	2	0	0.0	2.0	0	3	0	—	1.8
2016	29	JAX	14	8*	22	18	4	7	9	3.5	19.5	0	1	0	1	9.5
Career			96	33*	189	134	55	38	54	—	—	1	23	5	5	64.4

* GS not available from free sources — SG* estimated from snap share (nflverse 2012+)

Snap Counts

Season	Age	Team	G	GS	Off	Off%	Def	Def%	ST	ST%
2013	26	JAX	16	13*	—	0.0%	932	83.4%	89	19.3%
2014	27	JAX	16	10*	—	0.0%	718	64.4%	65	14.1%
2015	28	JAX	4	2*	—	0.0%	144	51.3%	—	0.0%
2016	29	JAX	16	8*	—	0.0%	540	50.5%	79	16.5%
Career			52	33*	—	—	2,334	—	233	—

* GS not available from free sources — SG* estimated from snap share (nflverse 2012+)

KV-H Anatomy

KV-H 61 · Strong Starter

A strong starter career by KV-H: a peak-driven profile that scores 61 of 100, era-normalized against sacks/g peers across 8 scored seasons.

Sustained

career value

×.6

Peak

best 3 seasons

×.4

×1

Longevity

career length

Blend 60.8 × longevity 1 = KV-H 61· confidence 91%

What builds the career mark of 56

On-field 39.3

Availability 16.7

On-field production Staying available

Season-by-season quality (era-relative sacks/g)

2009bestavg 50elite 702016

Team Carrier Evidence

Ranked #513 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

2014 JAX·3 team wins#24

Sacks · 9 · score 8

All-Time Standing

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

Depth

of 100

Reached 10% of the all-time Sacks leader — a rotational/depth all-time profile at the position.

10% of the all-time Sacks leader10

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: 93%.

Per-Snap Impact

Interior D-Line · proprietary · 2012+

Excellent

SIS

Disruption / 100 snaps:4.284See leaderboard →

Disruption/1004.284Snap share62.4%Def snaps2,334ReliableCV 0.28

Production per snap — the box score normalized by opportunity. SIS is z-scored within interior d-line, shrinkage-regularized so small samples don't spike, over the NFL snap-count era (2012+).

Career Aging Trajectory

vs. position group average · KV-H basis

Amber = this player (normalized to own peak). Indigo = average defensive linemen aging curve. Group peak age: 25. Source: StatVault KV-H era (1999+).

Combine · 2009

Percentiles compare each raw measurement against position peers, the full combine pool, and the same draft class where enough samples exist.

DL · 2009 class

5.00s

40-Yard

Above avg · 66th pct

Pos 66thAll 21thClass Pos 30thClass All 16th

33"

Vertical

Strong · 87th pct

Pos 87thAll 44thClass Pos 79thClass All 39th

College Stats

AuburnCollege listed; stat table pending import

College stats are not imported for this profile yet.

StatVault has the verified college attribution (Auburn), 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.

Reference Graph

Career teammates and draft class, derived from year-by-year rosters — every name is linked.

2009 Draft Class· this player went #62

#54Phil LoadholtOT #55William MooreS #56Fili MoalaDE #57Paul KrugerDE #58Sebastian VollmerOT #59Sherrod MartinDB #60William BeattyOT #61Sean SmithCB #64Richard QuinnTE #65Shonn GreeneRB #66Bradley FletcherDB #67Alex MageeDE #68Jarron GilbertDT #69Jason WilliamsLB #71Matt ShaughnessyOLB #72Terrance KnightonNT

Franchise Succession

the room, before and after

Sen'Derrick inherited the Jacksonville Jaguars DL room from Roy Miller (2013–2016), and handed it to Abry Jones (2013–2020).

Jeff Lageman 1995–1997Kelvin Pritchett 1995–1998Joel Smeenge 1995–2000Clyde Simmons 1996–1997Tony Brackens 1996–2003Renaldo Wynn

Similar Players

Statistical + physical similarity across every player in the database, position-relevant (0–100%).

Movementderived from season history

2016final season
Last recorded season with JAX
2013team change
Joined JAX (from TEN)
2009draft
Drafted by TEN — Round 2, Pick 62

Athletic & Unique Profile

verified measurements and curated source-tagged facts

6'2" / 309 lb

Frame

306 lb at 5.00s

Size-speed

Injury History

4 career games missed (Out)

From nflverse weekly injury reports · coverage begins 2009.

Season	Team	Games Out	Designations
2015	JAX	4	W1Out· KneeW2Out· KneeW3Doubtful· KneeW4Out· KneeW5Questionable· KneeW11Out· Elbow
2012	TEN	0	W1Doubtful· KneeW2Questionable· KneeW3Questionable· Knee
2010	TEN	0	W5Doubtful· KneeW6Questionable· KneeW13Doubtful· AnkleW14Questionable· AnkleW15Questionable· Ankle
2009	TEN	0	W12Questionable· AnkleW13Questionable· Ankle

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 8-season peers. See all →

peak 68

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

D2009

C2010

C+2011

C+2012

B2013

A2014

F2015

B2016

Availability

Career durability — games played vs. scheduled, across 8 seasons.

82%

Era Translator

Sacks 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 Sacks	Sacks/G	→ 2025 Sacks	→ 2025 /G
2009	1	0.2	3+2	0.2
2010	0	0	0	0
2011	0.5	0	1+0.5	0
2012	1.5	0.1	2+0.5	0.1
2013	4	0.3	4	0.2
2014	8.5	0.5	9+0.5	0.5
2015	0	0	0	0
2016	3.5	0.3	4+0.5	0.3

Data: nflverse:players, nflverse:player_stats_def, nflverse:snap_counts, nflverse:combine, nflverse:draft_picks, nflverse:injuries · multi-source verified via the StatVault Oracle · updated 6/18/2026

Career Value · VORP

72 career value over replacement — #1591 all-time of 4,642. 9/season above a replacement-level DL.

Draft OutcomeValue ↑

Pick #62 (Rd 2) · TEN · 2009 · +14.1 vs expected KV-H

61actual

46.9 expected · Δ+14.1

Fan Rating

Rate Sen'Derrick Marks — All-Time

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Archetype Intelligence

Career Value · VORP

Combined Season Grid

Defense

Snap Counts

KV-H Anatomy

Team Carrier Evidence

All-Time Standing

Per-Snap Impact

Career Aging Trajectory

Combine · 2009

College Stats

Reference Graph

Top Teammates

2009 Draft Class· this player went #62

Franchise Succession

Similar Players

Movementderived from season history

Athletic & Unique Profile

Injury History

Knox

Era Translator