CBJAX#25ACT

Ronald Darby

Top 45% all-time defensive backsSolid Contributor🌅 Early Bloomer · 2017

Height5'11"

Weight193 lb

BornJan 2, 1994

Age32

CollegeFlorida State See College Stats

ConferenceAtlantic Coast

Rookie yr2015

Draft2015 · Rd 2, Pick 50 · BUF

Archetype Intelligence

Solid ContributorExplore archetypes →

A defensive back with a middle-tier career — a rotational or backup contributor who filled their role reliably.

Career Value · VORP

VORP 60 · #1836 · Above Average

Worth 60 points of value above a freely-available replacement cornerback — top 41% of all 4,642 ranked at the position. 5 of 10 seasons cleared the replacement bar, by +12 on average.See board →

Seasons above replacement

5 cleared

5 replaced

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

Replacement

the KC-H bar

→

Seasons over

cleared the bar

+12

Avg surplus

peak +26

5 seasons × ~12 surplus ≈ VORP 60

Combined Season Grid

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

3 grids split in one view

Season	Age	Team	G	GS	Defense													Snap Counts						Advanced Defense & Coverage (2018+)
Season	Age	Team	G	GS	Tkl	Solo	Ast	TFL	QBHits	Sk	Dis	Int	PD	FF	FR	TD	Sfty	Off	Off%	Def	Def%	ST	ST%	Tgt	Cmp	Cmp%	RateAll	ADOT	Prss	Hrry	QBKD	Bltz	MissTkl	Miss%
2015	—	BUF	14	—	63	56	7	3	0	0.0	3.0	2	21	0	—	0	0	—	0.0%	914	88.4%	67	17.4%	—	—	—	—	—	—	—	—	—	—	—
2016	—	BUF	14	—	63	54	9	1	1	0.0	2.0	0	12	0	—	0	0	—	0.0%	821	88.6%	92	22.7%	—	—	—	—	—	—	—	—	—	—	—
2017	—	PHI	8	—	33	29	4	0	0	0.0	0.0	3	9	0	—	0	0	—	0.0%	379	74.3%	9	6.2%	—	—	—	—	—	—	—	—	—	—	—
2018	—	PHI	9	—	39	35	4	1	0	0.0	1.0	1	12	0	—	0	0	—	0.0%	542	94.2%	—	0.0%	82	50	0.6	86.7	10.7	0	0	0	1	7	0.1
2019	—	PHI	11	—	36	33	3	1	0	0.0	1.0	2	11	0	—	0	0	—	0.0%	506	76.3%	7	4.8%	67	43	0.6	116.8	15.3	0	0	0	2	7	0.2
2020	—	WAS	16	—	54	42	12	1	0	0.0	1.0	0	16	0	1	0	0	—	0.0%	1,002	95.5%	—	0.0%	98	53	0.5	81.0	12.9	0	0	0	5	6	0.1
2021	—	DEN	11	—	51	40	11	1	0	0.0	1.0	0	6	0	—	0	0	—	0.0%	676	97.0%	1	5.0%	70	38	0.5	84.8	12.6	0	0	0	0	2	0.0
2022	—	DEN	5	—	12	10	2	0	0	0.0	0.0	0	3	1	—	0	0	—	0.0%	281	88.2%	4	4.7%	18	7	0.4	69.9	10.2	0	0	0	1	2	0.1
2023	—	BAL	9	—	21	18	3	1	0	0.0	1.0	0	7	0	—	0	0	—	0.0%	442	58.0%	65	25.9%	43	19	0.4	63.3	11.9	0	0	0	0	3	0.1
2024	—	JAX	12	—	45	35	10	3	0	0.0	3.0	0	9	0	—	0	0	—	0.0%	659	72.0%	57	18.8%	61	42	0.7	120.0	10.8	0	0	0	3	1	0.0
Career		—	109	—	417	352	65	12	1	0.0	13.0	8	106	1	1	0	0	—	0.0%	6,222	83.3%	302	13.2%	439	252	—	—	—	0	0	0	12	28	—

Defense

Season	Age	Team	G	GS	Tkl	Solo	Ast	TFL	QBHits	Sk	Dis	Int	PD	FF	FR	VAL
2015	21	BUF	14	13*	63	56	7	3	0	0.0	3.0	2	21	0	—	11.4
2016	22	BUF	14	12*	63	54	9	1	1	0.0	2.0	0	12	0	—	7.1
2017	23	PHI	8	6*	33	29	4	0	0	0.0	0.0	3	9	0	—	7.2
2018	24	PHI	9	8*	39	35	4	1	0	0.0	1.0	1	12	0	—	6.5
2019	25	PHI	11	8*	36	33	3	1	0	0.0	1.0	2	11	0	—	7
2020	26	WAS	16	15*	54	42	12	1	0	0.0	1.0	0	16	0	1	8.9
2021	27	DEN	11	11*	51	40	11	1	0	0.0	1.0	0	6	0	—	5
2022	28	DEN	5	4*	12	10	2	0	0	0.0	0.0	0	3	1	—	2.7
2023	29	BAL	9	9*	21	18	3	1	0	0.0	1.0	0	7	0	—	4.2
2024	30	JAX	12	9*	45	35	10	3	0	0.0	3.0	0	9	0	—	5.1
Career			109	95*	417	352	65	12	1	—	—	8	106	1	1	65.1

* 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%
2015	21	BUF	15	13*	—	0.0%	914	88.4%	67	17.4%
2016	22	BUF	14	12*	—	0.0%	821	88.6%	92	22.7%
2017	23	PHI	8	6*	—	0.0%	379	74.3%	9	6.2%
2018	24	PHI	9	8*	—	0.0%	542	94.2%	—	0.0%
2019	25	PHI	11	8*	—	0.0%	506	76.3%	7	4.8%
2020	26	WAS	16	15*	—	0.0%	1,002	95.5%	—	0.0%
2021	27	DEN	11	11*	—	0.0%	676	97.0%	1	5.0%
2022	28	DEN	5	4*	—	0.0%	281	88.2%	4	4.7%
2023	29	BAL	16	9*	—	0.0%	442	58.0%	65	25.9%
2024	30	JAX	13	9*	—	0.0%	659	72.0%	57	18.8%
Career			118	95*	—	—	6,222	—	302	—

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

Advanced Defense & Coverage (2018+)

Season	Age	Team	G	GS	Tgt	Cmp	Cmp%	RateAll	ADOT	Bltz	MissTkl	Miss%
2018	24	PHI	9	8*	82	50	0.6	86.7	10.7	1	7	0.1
2019	25	PHI	11	8*	67	43	0.6	116.8	15.3	2	7	0.2
2020	26	WAS	16	15*	98	53	0.5	81.0	12.9	5	6	0.1
2021	27	DEN	11	11*	70	38	0.5	84.8	12.6	0	2	0.0
2022	28	DEN	5	4*	18	7	0.4	69.9	10.2	1	2	0.1
2023	29	BAL	16	9*	43	19	0.4	63.3	11.9	0	3	0.1
2024	30	JAX	13	9*	61	42	0.7	120.0	10.8	3	1	0.0
Career			81	64*	439	252	—	—	—	12	28	—

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

KV-H Anatomy

KV-H 53 · Solid

A solid career by KV-H: a remarkably steady profile that scores 53 of 100, era-normalized against int/g peers across 10 scored seasons.

Sustained

career value

×.6

Peak

best 3 seasons

×.4

×1

Longevity

career length

Blend 52.8 × longevity 1 = KV-H 53· confidence 96%

What builds the career mark of 52

On-field 37.7

Availability 14.3

On-field production Staying available

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

2015bestavg 51elite 702024

All-Time Standing

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

Depth

of 100

Reached 4% of the all-time Interceptions leader — a rotational/depth all-time profile at the position.

4% of the all-time Interceptions leader4

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%.

Per-Snap Impact

Defensive Backs · proprietary · 2012+

Above average

SIS

Disruption / 100 snaps:2.057See leaderboard →

Disruption/1002.057Snap share83.2%Def snaps6,222ReliableCV 0.32

Production per snap — the box score normalized by opportunity. SIS is z-scored within defensive backs, 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 backs aging curve. Group peak age: 21. Source: StatVault KV-H era (1999+).

Combine · 2015

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

DB · 2015 class

4.38s

40-Yard

Strong · 89th pct

Pos 89thAll 95thClass Pos 94thClass All 97th

41.5"

Vertical

Elite · 96th pct

Pos 96thAll 98thClass Pos 96thClass All 97th

129"

Broad Jump

Strong · 87th pct

Pos 87thAll 94thClass Pos 88thClass All 94th

12 reps

Bench

Low · 22th pct

Pos 22thAll 7thClass Pos 14thClass All 7th

6.94s

3-Cone

Above avg · 52th pct

Pos 52thAll 77thClass Pos 65thClass All 78th

4.14s

Shuttle

Above avg · 61th pct

Pos 61thAll 83thClass Pos 59thClass All 80th

Postseason Career

6 playoff games

Defense

Tkl30Solo24Ast6TFL1Dis1.0PD9FF1

College Stats

Florida StateCollege listed; stat table pending import

College stats are not imported for this profile yet.

StatVault has the verified college attribution (Florida State), 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.

2015 Draft Class· this player went #50

#42Jalen CollinsCB #43Benardrick McKinneyILB #44Hau'oli KikahaOLB #45Eric KendricksMLB #46Jaquiski TarttS #47Eric RoweCB #48Denzel PerrymanMLB #49Mitch MorseC #51Nate OrchardDE #52Jordan PhillipsDT #53Jake FisherOT #54Ameer AbdullahRB #55Maxx WilliamsTE #57Rob HavensteinOT #58Markus GoldenLB #59Ty SambrailoOT

Franchise Succession

the room, before and after

Ronald inherited the Philadelphia Eagles DB room from Rasul Douglas (2017–2019), and handed it to Avonte Maddox (2018–2024).

Terry Hoage 1986–1990Eric Allen 1988–1994Otis Smith 1991–1994Mark McMillian 1992–1995Greg Jackson 1994–1995Bobby Taylor

Similar Players

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

Dadrion Taylor-Demerson

Movementderived from season history

2024team change
Joined JAX (from BAL)
2024final season
Last recorded season with JAX
2023team change
Joined BAL (from DEN)
2021team change
Joined DEN (from WAS)
2020team change
Joined WAS (from PHI)
2017team change
Joined PHI (from BUF)
2015draft
Drafted by BUF — Round 2, Pick 50

Athletic & Unique Profile

verified measurements and curated source-tagged facts

5'11" / 193 lb

Frame

193 lb at 4.38s

Size-speed

41.5" vert / 129" broad

Explosion

12 reps

Bench power

Injury History

11 career games missed (Out)

From nflverse weekly injury reports · coverage begins 2009.

Season	Team	Games Out	Designations
2023	BAL	0	W18Questionable· Illness
2021	DEN	1	W17Questionable· ShoulderW18Out· Shoulder
2019	PHI	3	W4Out· HamstringW5Out· HamstringW6Out· HamstringW7Questionable· HamstringW15Questionable· Hip Flexor
2018	PHI	1	W11Out· Knee
2017	PHI	5	W2Out· AnkleW3Out· AnkleW4Out· AnkleW5Out· AnkleW6Out· AnkleW7Questionable· AnkleW8Questionable· AnkleW9Questionable· Ankle
2016	BUF	1	W3Questionable· HamstringW4Questionable· HamstringW13Out· Concussion
2015	BUF	0	W16Questionable· 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 10-season peers. See all →

peak 54

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

B2015

C2016

B+2017

C+2018

B2019

C+2020

C2021

F2022

C2023

C2024

Availability

Career durability — games played vs. scheduled, across 10 seasons.

72%

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
2015	2	0.1	2	0.1
2016	0	0	0	0
2017	3	0.4	5+2	0.3
2018	1	0.1	1	0.1
2019	2	0.2	2	0.1
2020	0	0	0	0
2021	0	0	0	0
2022	0	0	0	0
2023	0	0	0	0
2024	0	0	0	0

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

60 career value over replacement — #1836 all-time of 4,642. 6/season above a replacement-level CB.

Draft OutcomeValue ↑

Pick #50 (Rd 2) · BUF · 2015 · +4.1 vs expected KV-H

53actual

48.9 expected · Δ+4.1

Fan Rating

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Archetype Intelligence

Career Value · VORP

Combined Season Grid

Defense

Snap Counts

Advanced Defense & Coverage (2018+)

KV-H Anatomy

All-Time Standing

Per-Snap Impact

Career Aging Trajectory

Combine · 2015

Postseason Career

Defense

College Stats

Reference Graph

Top Teammates

2015 Draft Class· this player went #50

Franchise Succession

Similar Players

Movementderived from season history

Athletic & Unique Profile

Injury History

Knox

Era Translator

Career Geography