Reached 6% 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: 92%.
Career Value · VORP
8 career value over replacement — #3725 all-time of 4,649. 1.3/season above a replacement-level LB.
Fan Rating
Rate Frank Zombo — 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.
Production per snap — the box score normalized by opportunity. SIS is z-scored within linebackers, shrinkage-regularized so small samples don't spike, over the NFL snap-count era (2012+).
Amber = this player (normalized to own peak). Indigo = average linebackers aging curve. Group peak age: 32. Source: StatVault KV-H era (1999+).
Defense
Snap Counts (2012–present)
Proprietary StatVault Metrics
College stats are not imported for this profile yet.
StatVault has the verified college attribution (Central Michigan), 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.
Frank inherited the Kansas City Chiefs LB room from Justin Houston (2011–2018), and handed it to Josh Mauga (2014–2015).
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 KC
Joined KC (from GB)
Entered the NFL with GB
From nflverse weekly injury reports · coverage begins 2009.
| Season | Team | Games Out | Designations |
|---|---|---|---|
| 2018 | KC | 1 | W9Out· HamstringW10Questionable· Hamstring |
| 2011 | GB | 8 | W1Out· ShoulderW2Out· ShoulderW3Out· ShoulderW4Out· ShoulderW5Out· ShoulderW7Out· KneeW10Out· HamstringW11Out· Hamstring |
| 2010 | GB | 1 | W15Doubtful· KneeW16Doubtful· KneeW17Out· KneeW18Out· KneeW19Out· KneeW20Out· Knee |
StatVault's proprietary player intelligence, informed by full career data. How Knox works →
Era-normalized career quality — z-scored against 6-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 |
|---|---|---|---|---|
| 2010 | 35 | 2.9 | 34-1 | 2 |
| 2011 | 7 | 1.8 | 13+6 | 0.8 |
| 2013 | 22 | 3.1 | 32+10 | 1.9 |
| 2015 | 10 | 1.7 | 9-1 | 0.5 |
| 2016 | 39 | 3 | 35-4 | 2.1 |
| 2017 | 37 | 2.8 | 35-2 | 2 |
Data: nflverse:players, nflverse:player_stats_def, nflverse:snap_counts, nflverse:injuries · multi-source verified via the StatVault Oracle · updated 7/31/2026
Kroy Biermann
OLB
91% match