Isaiah
Mcduffie.
Isaiah
Mcduffie.
Boston Col.· 6'1"· 227 lb· 4.61s 40
"A 6'1' Boston College linebacker and Buffalo native whose 2020 tackle production and instincts outran a modest athletic profile — a Day 3 downhill MIKE projection with special-teams insurance."Pre-draft read
A downhill, run-and-hit inside linebacker, he plays fast between the tackles, thriving when the box allows him to trigger. He consistently reads through the guard, pressing the line of scrimmage without hesitation, and finishes runs with square, low-pad form tackling that rarely yields forward progress. Active hands shed cutoff blocks from centers and pulling guards, showcasing short-area burst on A- and B-gap fills where quick exchanges are common.
His range is functional east-to-west when diagnosing plays early, though he can be slow to tighten late against zone stretch. In coverage, he's a serviceable hook-curl defender. Special-teams instincts are a genuine separator. His best snaps occur when the defensive front absorbs blockers, enabling him to play free.
One-gap 4-3 penetrating front that asks its linebackers to fill and flow to the ball in the box.
Immediate core-four special teams impact player who can develop into a two-down MIKE backer against run-heavy fronts.
Fangio two-high systems that asks their MIKE LB to consistently carry athletic tight ends up the seam in man coverage.
McDuffie's downhill trigger and physical tackling in the box are well-suited for run-heavy schemes that keep him playing between the tackles and allow defensive linemen to absorb blocks.
Isaiah McDuffie NFL Draft Tape | Boston College LB
Pre-draft cut-up focused on the 2020 season — downhill triggers, run fits and finish.
Isaiah McDuffie 2020 Regular Season Highlights
Full 2020 breakout: 107 tackles, 14.5 TFLs, showing block-shed and form tackling.
Isaiah McDuffie — East-West Shrine Bowl
All-star week reps against non-ACC competition after opting into the postseason showcase.
This prospect projects as a downhill MIKE linebacker with immediate core special-teams value, offering a clear role as a reliable two-down run stopper. His game is built on instincts and gap discipline, making him valuable for teams prioritizing defensive fronts that allow linebackers to play fast and fill gaps.
He emerged as a key defender by leading his team in tackles during a shortened 2020 season, compiling 107 stops with 14.5 for loss and 4 sacks across 11 games, earning All-ACC honors. This production came after a significant late-2019 ACL tear, demonstrating a strong return to form without a visible dip in play speed or aggression.
Evaluators noted concerns regarding his length and limited coverage range against athletic tight ends. Despite these flags, consensus positioned him as a sixth-round pick, valued more for his defined role and core-four special teams upside than for high developmental ceiling, reflecting a balanced risk-reward assessment for NFL teams. He was ultimately drafted in the sixth round, pick 220, by Green Bay.
- 01
Downhill trigger
Diagnoses inside runs quickly through the guard and attacks the line of scrimmage in a straight line, arriving at the mesh point before the back can bend the run back.
- 02
Form tackler
Consistently square, low-pad finisher who wraps and drives through contact; his stops between the tackles rarely turn into fall-forward yardage against backs.
- 03
Block-shed hands
Active, well-timed hands against centers and pulling guards; extends and stacks to keep his frame clean rather than getting swallowed at the second level.
- 04
Special-teams instincts
Sharp lane discipline on kickoff and coverage angles as a gunner; these traits were obvious enough that evaluators flagged an immediate core-four role.
- 05
Production in a small window
Led BC with 107 tackles, 14.5 TFLs and 4 sacks across just 11 games in 2020, coming back from a late-2019 ACL tear without visible dip.
- 01
Average length
Shorter arms for the position show up when tight ends and offensive tackles climb clean; struggles to disengage once a blocker gets into his chest.
- 02
Pedestrian recovery speed
Timed and play speed are both merely adequate; when his first read is wrong, chase angles can be beaten by athletic backs and tight ends.
- 03
Coverage vs athletic TEs
Serviceable in hook-curl zones, but true man reps against modern move tight ends expose hip tightness and late transitions out of his backpedal.
- 04
Medical file
Torn ACL in November 2019 required teams to grade the knee and the recovery arc; the 2020 tape was strong but the sample was short and durability remained a question.
— — — positional median (p50)
- 40 yd
- 4.61sp50
- Vertical
- —in
- Broad jump
- —in
- Three-cone
- —s
- Shuttle
- —s
- Bench
- —rep
| Yr | Team | G | Tkl | Sk | Int | PD | FF |
|---|---|---|---|---|---|---|---|
| 2017 | Boston College | 13 | 8 | 0 | 0 | 1 | 0 |
| 2018 | Boston College | 12 | 86 | 3.5 | 0 | 2 | 0 |
| 2019 | Boston College | 4 | 30 | 2 | 0 | 0 | 0 |
| 2020 | Boston College | 11 | 107 | 3 | 1 | 0 | 0 |
| Career | — | 40 | 231 | 8.5 | 1 | 3 | 0 |
A dash means the figure is not published by a source we trust — never a zero we invented.
Sixth-round-caliber core special-teamer with occasional defensive spot-starts when the depth chart thins — the exact archetype the Packers keep drafting.
Undrafted BC-style two-down thumper who carved out real snaps in Green Bay on instincts and tackling — realistic best case if the coverage reps stabilize.
Late-round LB who never carved out a defensive role and rode special teams until the roster turned over — the outcome if coverage limitations wall him off.
Everything above is the pre-draft evaluation. This section is what actually happened — updated year over year.
Pre-draft context. Isaiah McDuffie arrived at the 2021 draft as a fifth-year Boston College linebacker who had rebuilt his stock in a shortened senior year. After a torn ACL cut his 2019 short, he returned in 2020 to lead the Eagles with 107 tackles, 14.5 for loss and 4 sacks across 11 games, earning All-ACC recognition. At 6'1'', 227 pounds with a 4.61 forty at his BC pro day, the athletic profile was ordinary; the evaluation lived on downhill instincts, form tackling and the way he stacked and shed second-level blocks. Board consensus landed in the sixth-round MIKE/special-teams bucket.
NFL fit — Green Bay. Green Bay took him at 220 as a developmental inside linebacker behind De'Vondre Campbell and Krys Barnes, betting on immediate core special-teams value with a two-down defensive floor. The fit made sense schematically — Joe Barry's and later Jeff Hafley's defenses lean on downhill MIKE play — and the Packers' pattern of drafting late-round linebackers to churn through core-four roles gave him a real snap path from day one.
Retrospective. Through his rookie contract McDuffie settled in exactly where the tape projected: a steady special-teams contributor who stepped into defensive snaps when injuries hit the room, with a handful of starts when Campbell missed time. He re-signed with Green Bay, has stayed on the 53 as a rotational ILB and core teamer, and has largely delivered the Day-3 outcome teams underline in yellow — a hit relative to slot rather than an unearth. The coverage ceiling never fully expanded, but the special-teams identity, run-defense reliability and locker-room fit have kept him employed.