Reached 2% of the all-time Interceptions leader — a rotational/depth all-time profile at the position.
A 0–100 scale where 100 = matched the all-time leader at 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: 90%.
Career Value · VORP
14 career value over replacement — #3458 all-time of 4,695. 3.5/season above a replacement-level LB.
Pick #81 (Rd 3) · BUF · 1994 · +9.5 vs expected KV-H
Fan Rating
Rate Marlo Perry — All-Time
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Similar Players
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.
Modern-era stats (1999+) come from nflverse's open data releases. Pre-1999 seasons are backfilled additively from Wikipedia and NFL.com's own official season pages — never from rights-restricted sources.
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 (Jackson State University), 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.
Statistical + physical similarity across every player in the database, position-relevant (0–100%).
Last recorded season with BUF
Drafted by BUF — Round 3, Pick 81
StatVault's proprietary player intelligence, informed by full career data. How Knox works →
Era-normalized career quality — z-scored against 4-season peers. See all →
Career durability — games played vs. scheduled, across 6 seasons.
Composite score across availability, IR frequency, and injury severity. See all →
Tackles translated to the 2025 NFL — 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 |
|---|---|---|---|---|
| 1995 | 59 | 5.4 | 78+19 | 4.6 |
| 1996 | 21 | 1.6 | 32+11 | 1.9 |
| 1997 | 12 | 0.9 | 18+6 | 1 |
| 1999 | 25 | 2.8 | 38+13 | 2.2 |
Data: nflverse:players, nflverse:draft_picks, nflverse:player_stats_def, wikipedia:season-stats (CC-BY-SA, facts-only), nfl.com:official-stats (games-played, facts-only reference) · multi-source verified via the StatVault Oracle · updated 8/31/2026
Donnie Spragan
OLB
88% match
1994 Draft ClassmatesFull class →
Gave the Buffalo Bills an entire corpus-attributed career — 6 seasons (1994–1999), one crest. The rarest loyalty in the sport.