Jim McMahon is a career quality starter — a quarterback whose body of work places McMahon in the top quarter of all players at the position historically. The Knox model values sustained contribution over flash, and McMahon's career arc reflects exactly that kind of reliable professional-grade performance.
Regular-season all-time ranks
A quality quarterback with a top 30% among starters — a legitimate starter who contributed meaningfully across their career.
Worth 177 points of value above a freely-available replacement quarterback — top 11% of all 4,649 ranked at the position. 9 of 13 seasons cleared the replacement bar, by +19.7 on average.
Career Value · VORP
177 career value over replacement — #478 all-time of 4,649. 13.6/season above a replacement-level QB.
Pick #5 (Rd 1) · CHI · 1982 · -5.4 vs expected KV-H
Fan Rating
Rate Jim McMahon — All-Time
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Similar Players
Seasons above replacement
9 seasons × ~19.7 surplus ≈ VORP 177
Jay Fiedler
QB
84% match