Stephen Cooper is a career quality starter — a linebacker whose body of work places Cooper in the top quarter of all players at the position historically. The Knox model values sustained contribution over flash, and Cooper's career arc reflects exactly that kind of reliable professional-grade performance.
Reached 5% of the all-time Sacks leader — a rotational/depth all-time profile at the position.
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%.
Career Value · VORP
52 career value over replacement — #2012 all-time of 4,649. 6.5/season above a replacement-level LB.
Fan Rating
Rate Stephen Cooper — All-Time
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StatVault aggregates multiple open-licensed and proprietary sources into a single profile. The depth indicator above shows which layers are available for this player.
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.
Amber = this player (normalized to own peak). Indigo = average linebackers aging curve. Group peak age: 32. Source: StatVault KV-H era (1999+).
Defense
Proprietary StatVault Metrics
College stats are not imported for this profile yet.
StatVault has the verified college attribution (Maine), 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.
Career teammates and draft class, derived from year-by-year rosters — every name is linked.
Stephen inherited the Los Angeles Chargers LB room from Donnie Edwards (2002–2006), and handed it to Randall Godfrey (2004–2006).
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.
Statistical + physical similarity across every player in the database, position-relevant (0–100%).
Last recorded season with SD
Entered the NFL with SD
From nflverse weekly injury reports · coverage begins 2009.
| Season | Team | Games Out | Designations |
|---|---|---|---|
| 2010 | SD | 1 | W2Doubtful· KneeW3Questionable· KneeW13Questionable· KneeW16Out· Knee |
| 2009 | SD | 0 | W6Questionable· Knee |
StatVault's proprietary player intelligence, informed by full career data. How Knox works →
Era-normalized career quality — z-scored against 8-season peers. See all →
Career durability — games played vs. scheduled, across 9 seasons.
Composite score across availability, IR frequency, and injury severity. See all →
Tackles 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 Tackles | Tackles/G | → 2025 Tackles | → 2025 /G |
|---|---|---|---|---|
| 2003 | 6 | 1 | 0-6 | 0 |
| 2004 | 24 | 2 | 3-21 | 0.2 |
| 2005 | 24 | 2.4 | 12-12 | 0.7 |
| 2006 | 35 | 2.3 | 13-22 | 0.8 |
| 2007 | 89 | 5.6 | 85-4 | 5 |
| 2008 | 73 | 6.1 | 96+23 | 5.6 |
| 2009 | 68 | 4.9 | 70+2 | 4.1 |
| 2010 | 31 | 2.8 | 33+2 | 1.9 |
Data: nflverse:players, nflverse:player_stats_def, nflverse:injuries · multi-source verified via the StatVault Oracle · updated 7/31/2026
Jamie Duncan
MLB
89% match
2003 Draft ClassmatesFull class →
Gave the Los Angeles Chargers an entire corpus-attributed career — 9 seasons (2003–2011), one crest. The rarest loyalty in the sport.