William Perry is a career quality starter — a pass rusher whose body of work places Perry in the top half of all players at the position historically. The Knox model values sustained contribution over flash, and Perry's career arc reflects exactly that kind of reliable professional-grade performance.
A edge rusher with a above-average career — the kind of consistent contributor every roster needs. Solid availability (excellent availability over their career) added to their value.
Worth 72 points of value above a freely-available replacement interior lineman — top 35% of all 4,649 ranked at the position. 8 of 8 seasons cleared the replacement bar, by +9 on average.See board →
Seasons above replacement
Career Value · VORP
72 career value over replacement — #1593 all-time of 4,649. 9/season above a replacement-level DL.
Pick #22 (Rd 1) · CHI · 1985 · +2.3 vs expected KV-H
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8 seasons × ~9 surplus ≈ VORP 72
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89% match