Aaron Williams is a career quality starter β a defensive back whose body of work places Williams in the top half of all players at the position historically. The Knox model values sustained contribution over flash, and Williams's career arc reflects exactly that kind of reliable professional-grade performance.
Aaron Williams
Height6'0"
Weight199 lb
BornApr 23, 1990
Age36
CollegeTexasSee College Stats
ConferenceBig Twelve
Rookie yr2011
Draft2011 Β· Rd 2, Pick 34 Β· BUF
A quality defensive back with a above-average career β a legitimate starter who contributed meaningfully across their career.
Career Value Β· VORP
VORP 37 Β· #2410 Β· Role PlayerWorth 37 points of value above a freely-available replacement safety β top 53% of all 4,642 ranked at the position. 3 of 5 seasons cleared the replacement bar, by +12.3 on average.See board β
Seasons above replacement
3 cleared
2 replaced
Beat replacement (adds to VORP) Below it β adds 0, never a debit
48
Replacement
the KC-H bar
β
3
Seasons over
cleared the bar
Γ
+12.3
Avg surplus
peak +28
3 seasons Γ ~12.3 surplus β VORP 37
Combined Season Grid
The full season-by-season grids, joined on one timeline. Every selected stat family stays visible at onceβno tab hopping.
2 grids split in one view
| Season | Age | Team | G | GS | Defense | Snap Counts | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tkl | Solo | Ast | TFL | QBHits | Sk | Dis | Int | PD | FF | FR | TD | Sfty | Off | Off% | Def | Def% | ST | ST% | |||||
| 2011 | β | BUF | 9 | β | 24 | 21 | 3 | 0 | 0 | 0.0 | 0.0 | 1 | 5 | 1 | β | 0 | 0 | β | β | β | β | β | β |
| 2012 | β | BUF | 11 | β | 27 | 19 | 8 | 0 | 0 | 0.0 | 0.0 | 0 | 7 | 0 | β | 0 | 0 | β | β | β | β | β | β |
| 2013 | β | BUF | 14 | β | 73 | 51 | 22 | 2 | 0 | 0.0 | 2.0 | 4 | 11 | 1 | β | 0 | 0 | β | 0.0% | 926 | 91.0% | 105 | 23.6% |
| 2014 | β | BUF | 15 | β | 65 | 40 | 25 | 2 | 0 | 0.0 | 2.0 | 1 | 5 | 0 | β | 0 | 0 | β | 0.0% | 902 | 89.2% | 76 | 17.5% |
| 2015 | β | BUF | 3 | β | 14 | 8 | 6 | 0 | 1 | 0.0 | 1.0 | 1 | 3 | 0 | β | 0 | 0 | β | 0.0% | 191 | 84.0% | 10 | 11.0% |
| 2016 | β | BUF | 7 | β | 19 | 12 | 7 | 1 | 0 | 0.0 | 1.0 | 0 | 5 | 0 | 1 | 1 | 0 | β | 0.0% | 338 | 71.4% | 24 | 11.9% |
| Career | β | 59 | β | 222 | 151 | 71 | 5 | 1 | 0.0 | 6.0 | 7 | 36 | 2 | 1 | 1 | 0 | β | 0.0% | 2,357 | 83.9% | 215 | 16.0% | |
Defense
| Season | Age | Team | G | GS | Tkl | Solo | Ast | TFL | QBHits | Sk | Dis | Int | PD | FF | FR | TD | Sfty | VAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2011 | 21 | BUF | 9 | β | 24 | 21 | 3 | 0 | 0 | 0.0 | 0.0 | 1 | 5 | 1 | β | 0 | 0 | 4.8 |
| 2012 | 22 | BUF | 11 | β | 27 | 19 | 8 | 0 | 0 | 0.0 | 0.0 | 0 | 7 | 0 | β | 0 | 0 | 4.5 |
| 2013 | 23 | BUF | 14 | 13* | 73 | 51 | 22 | 2 | 0 | 0.0 | 2.0 | 4 | 11 | 1 | β | 0 | 0 | 10.4 |
| 2014 | 24 | BUF | 15 | 13* | 65 | 40 | 25 | 2 | 0 | 0.0 | 2.0 | 1 | 5 | 0 | β | 0 | 0 | 6.4 |
| 2015 | 25 | BUF | 3 | β | 14 | 8 | 6 | 0 | 1 | 0.0 | 1.0 | 1 | 3 | 0 | β | 0 | 0 | β |
| 2016 | 26 | BUF | 7 | 5* | 19 | 12 | 7 | 1 | 0 | 0.0 | 1.0 | 0 | 5 | 0 | 1 | 1 | 0 | 3.7 |
| Career | 59 | 31* | 222 | 151 | 71 | 5 | 1 | β | β | 7 | 36 | 2 | 1 | 1 | 0 | 29.8 |
* GS not available from free sources β SG* estimated from snap share (nflverse 2012+)
Snap Counts
| Season | Age | Team | G | GS | Off | Off% | Def | Def% | ST | ST% |
|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 23 | BUF | 14 | 13* | β | 0.0% | 926 | 91.0% | 105 | 23.6% |
| 2014 | 24 | BUF | 15 | 13* | β | 0.0% | 902 | 89.2% | 76 | 17.5% |
| 2015 | 25 | BUF | 3 | β | β | 0.0% | 191 | 84.0% | 10 | 11.0% |
| 2016 | 26 | BUF | 7 | 5* | β | 0.0% | 338 | 71.4% | 24 | 11.9% |
| Career | 39 | 31* | β | β | 2,357 | β | 215 | β |
* GS not available from free sources β SG* estimated from snap share (nflverse 2012+)
KV-H Anatomy
KV-H 56 Β· Strong StarterA strong starter career by KV-H: a peak-driven profile that scores 56 of 100, era-normalized against int/g peers across 5 scored seasons.
54
Sustained
career value
Γ.6
60
Peak
best 3 seasons
Γ.4
Γ1
Longevity
career length
Blend 56.4 Γ longevity 1 = KV-H 56Β· confidence 98%
What builds the career mark of 54
On-field 39.1
Availability 14.9
On-field production Staying available
Season-by-season quality (era-relative int/g)
2011bestavg 51elite 702016
Team Carrier Evidence
Ranked #437 of 600 by seasons where high individual production happened on low-win teams. Score aggregates only tracked StatVault categories.
All-Time Standing
how this career measures against the all-time greats at the position3
Depth
of 100
Reached 3% of the all-time Interceptions leader β a rotational/depth all-time profile at the position.
3% of the all-time Interceptions leader3
0 categories β₯25% of the all-time leader0
A 0β100 scale where 100 = matched the all-time leaderat this position. Built only from visible encyclopedia data β career production vs. the all-time leader, plus efficiency (EPA) and comparable-player confidence β so it's a transparent context score, not a subjective rating. Tiers: Elite β₯ 85 Β· Strong β₯ 65 Β· Solid β₯ 45 Β· Depth < 45. Comparable-player confidence: 92%.
Per-Snap Impact
Defensive Backs Β· proprietary Β· 2012+48
Solid
SIS
Disruption/1001.57Snap share83.9%Def snaps2,357ReliableCV 0.34
Production per snap β 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 Β· KV-H basisAmber = this player (normalized to own peak). Indigo = average defensive backs aging curve. Group peak age: 21. Source: StatVault KV-H era (1999+).
Combine Β· 2011
Percentiles compare each raw measurement against position peers, the full combine pool, and the same draft class where enough samples exist.
4.55s
40-Yard
Below avg Β· 28th pct
Pos 28thAll 68thClass Pos 30thClass All 65th
37.5"
Vertical
Above avg Β· 69th pct
Pos 69thAll 84thClass Pos 81thClass All 88th
127"
Broad Jump
Strong Β· 79th pct
Pos 79thAll 91thClass Pos 89thClass All 93th
18 reps
Bench
Strong Β· 75th pct
Pos 75thAll 33thClass Pos 57thClass All 29th
6.72s
3-Cone
Strong Β· 84th pct
Pos 84thAll 95thClass Pos 72thClass All 87th
4.07s
Shuttle
Strong Β· 76th pct
Pos 76thAll 92thClass Pos 70thClass All 89th
College stats are not imported for this profile yet.
StatVault has the verified college attribution (Texas), 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 β every name is linked.
Top Teammates
Kyle WilliamsDT6yMarcell DareusDT6yStephon GilmoreCB5yLeodis McKelvinCB5yJerry HughesDE4yRobert WoodsWR4yLee SmithTE4yMario WilliamsDE4yDan CarpenterK4yFred JacksonRB4yNickell Robey-ColemanDB4yMarquise GoodwinWR4yNigel BradhamOLB4yGarrison SanbornLS4yC.J. SpillerRB4yDa'Norris SearcyS4yCordy GlennOT4yScott ChandlerTE4yEric WoodC4yCorbin BryantDT4yAlex CarringtonDE4yEJ ManuelQB4yRon BrooksCB4yManny LawsonOLB3y
2011 Draft ClassΒ· this player went #34
Franchise Succession
the room, before and afterAaron inherited the Buffalo Bills DB room from Da'Norris Searcy (2011β2014), and handed it to Stephon Gilmore (2012β2016).
Similar Players
Statistical + physical similarity across every player in the database, position-relevant (0β100%).
Movementderived from season history
- 2016final season
Last recorded season with BUF
- 2011draft
Drafted by BUF β Round 2, Pick 34
Athletic & Unique Profile
verified measurements and curated source-tagged facts6'0" / 199 lb
Frame
204 lb at 4.55s
Size-speed
37.5" vert / 127" broad
Explosion
18 reps
Bench power
Injury History
13 career games missed (Out)From nflverse weekly injury reports Β· coverage begins 2009.
| Season | Team | Games Out | Designations |
|---|---|---|---|
| 2016 | BUF | 1 | W4QuestionableΒ· AnkleW6QuestionableΒ· AnkleW8OutΒ· Neck |
| 2015 | BUF | 2 | W3OutΒ· NeckW4OutΒ· Neck |
| 2014 | BUF | 0 | W6QuestionableΒ· Wrist / NeckW8QuestionableΒ· Neck |
| 2013 | BUF | 2 | W16OutΒ· RibsW17OutΒ· Ribs |
| 2012 | BUF | 3 | W10OutΒ· KneeW11OutΒ· KneeW12OutΒ· KneeW13QuestionableΒ· KneeW14QuestionableΒ· Knee |
| 2011 | BUF | 5 | W4OutΒ· ChestW5OutΒ· ChestW6OutΒ· ChestW8OutΒ· ChestW9OutΒ· ChestW10QuestionableΒ· ChestW14DoubtfulΒ· Calf |
Knox
StatVault's proprietary player intelligence, informed by full career data. How Knox works β
Historical Knox Β· KV-H
Era-normalized career quality β z-scored against 5-season peers. See all β
56
peak 60
Season Report CardsΒ· KV-H era-normalized per season
C+2011
D2012
B+2013
C+2014
D2016
Availability
Career durability β games played vs. scheduled, across 6 seasons.
61%
Era Translator
INT translated to the 2025NFL β each season's standing among its own-era peers, projected onto 2025's scoring environment. Modern-era (1999+) coverage.
| Season | Actual INT | INT/G | β 2025 INT | β 2025 /G |
|---|---|---|---|---|
| 2011 | 1 | 0.1 | 1 | 0.1 |
| 2012 | 0 | 0 | 0 | 0 |
| 2013 | 4 | 0.3 | 4 | 0.2 |
| 2014 | 1 | 0.1 | 1 | 0 |
| 2016 | 0 | 0 | 0 | 0 |
Data: nflverse:players, nflverse:player_stats_def, nflverse:snap_counts, nflverse:combine, nflverse:draft_picks, nflverse:injuries Β· multi-source verified via the StatVault Oracle Β· updated 6/18/2026
Career Value Β· VORP
37 career value over replacement β #2410 all-time of 4,642. 7.4/season above a replacement-level S.
Draft OutcomeValue β
Pick #34 (Rd 2) Β· BUF Β· 2011 Β· +1.1 vs expected KV-H
56actual
54.9 expected Β· Ξ+1.1
Fan Rating
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