Isaiah McDuffie is a career quality starter — a linebacker whose body of work places McDuffie in the top quarter of all players at the position historically. The Knox model values sustained contribution over flash, and McDuffie's career arc reflects exactly that kind of reliable professional-grade performance.
Isaiah McDuffie
Top 18% all-time linebackersElite Playmaker
Height6'1"
Weight227 lb
BornJul 21, 1999
Age27
ConferenceAtlantic Coast
Rookie yr2021
A top 20% all-time linebacker who consistently made an impact across multiple seasons. Lower snap-level production reinforces the playmaking ability.
Career Value · VORP
VORP 61 · #1814 · Above AverageWorth 61 points of value above a freely-available replacement linebacker — top 40% of all 4,649 ranked at the position. 3 of 4 seasons cleared the replacement bar, by +20.3 on average.See board →
Seasons above replacement
3 cleared
1 replaced
Beat replacement (adds to VORP) Below it — adds 0, never a debit
47
Replacement
the KC-H bar
→
Career Value · VORP
61 career value over replacement — #1814 all-time of 4,649. 15.3/season above a replacement-level LB.
Draft OutcomeSteal ↑
Pick #220 (Rd 6) · GB · 2021 · +42.2 vs expected KV-H
61actual
18.8 expected · Δ+42.2
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