Usage Score
4.4
Player Dossier
2017-2021Northern Illinois
Jack Heflin
DL • 6'4" • 312 lbs • Prophetstown, IL, USA
Ball-hunting defenderSplash play profile
Jack Heflin shows a ball-hunting defender profile with partial disruption data.
Efficiency
16.6
Consistency
31.5
Season Value
16.6
Career Arc
Value trend by season
Best season by value score: 2019 Regular Season · Northern Illinois
1718192021
Snapshot
- Career Teams
- 2
- Seasons Tracked
- 5
- Program Path
- Northern Illinois • Iowa
- Peak Game
- Peak game by takeover score: Toledo
Scouting Read
Best season and peak-game context are pinned here so the rest of the page can stay analytical without losing the headline story.
Jack Heflin, DL. Best season Best season by value score: 2019 Regular Season · Northern Illinois. Jack Heflin shows a ball-hunting defender profile with partial disruption data.
Jack Heflin played DL for Northern Illinois and Iowa. Across 5 tracked seasons, Jack Heflin recorded 81 tackles. His top tracked season came in 2019 with Northern Illinois.
Player insights
Lead takeaway
Best season by value score: 2019 Regular Season
Northern Illinois paired 11.5 primary output with 24.4 efficiency.
Supporting note
2020 Regular Season role shape
impact-led usage with 16.6 efficiency.
Supporting note
Career value cooled off
2021 Regular Season fell back from the prior stop by season value score.
Supporting note
Multi-stop career journey
Production spans 2 team stops, with role shifts visible across Northern Illinois, Iowa.
Supporting note
Peak game by takeover score: Penn State
Win with 2 impact plays across the defensive snap sheet. It landed in the 100th percentile of the selected season.
Analysis workspace
Season Workbench
Filter the strongest season sample, inspect game-level shape, and then drop into the full log without losing the story of the year.
Season Explorer
Understand the selected season before dropping into the full game log.
2020 Regular Season · Iowa
Games
8
Havoc Plays / G
0.6
Efficiency
16.6
Usage
4.4
Consistency
31.5
Best Game by takeover score
Wisconsin
Hover a point or expand a game row to keep the active game context visible here.
Active game
Hover over a point
Hover or select a game to keep its context visible here without the page shifting around.
Game-by-Game Trend
Follow how the selected stat changes from one game to the next. Spikes mark standout outings, while dips show quieter weeks.
Chronological game order.
Game by game trend chart. Purdue: 0. Northwestern: 0.5. Michigan State: 1. Minnesota: 0. Penn State: 2. Nebraska: 0. Illinois: 0. Wisconsin: 1
Volume vs Efficiency
Each dot is a game. Farther right means the player carried more of the workload, and higher means they were more efficient with those chances.
Low volumeHigh quality
High volumeHigh quality
Low volumeLower quality
High volumeLower quality
Volume on the x-axis, quality on the y-axis.
Volume versus efficiency scatter chart. Purdue: 2 by 8.3. Northwestern: 7 by 34.2. Michigan State: 4 by 26.7. Minnesota: 3 by 12.5. Penn State: 1 by 24.2. Nebraska: 1 by 4.2. Illinois: 1 by 4.2. Wisconsin: 2 by 18.3
Split Comparison
Compare how this player performed across different situations. "Games" shows how many matchups are included in each split.
Wins0.7 · Games = 6 · +0.4 vs Losses
Losses0.3 · Games = 2 · -0.4 vs Wins
First Half0.4 · Games = 4 · -0.4 vs Second Half
Second Half0.8 · Games = 4 · +0.4 vs First Half
Game Log
Dense stat lines with inline explanations and season-linked highlights.
8 games
Featured metric
Havoc Plays
Top game by takeover score
Penn State
Best efficiency game
34.2 vs Northwestern
| Result | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat 12/12 | vs Wisconsin | W 28-7 | 2 | 2 | — | 1 | 0 | — | 0 | — | — |
| Sat 12/5 | @ Illinois | W 35-21 | 1 | 0 | — | 0 | 0 | — | 0 | — | — |
| Fri 11/27 | vs Nebraska | W 26-20 | 1 | 0 | — | 0 | 0 | — | 0 | — | — |
| Sat 11/21 | @ Penn State | W 41-21 | 1 | 1 | — | 1 | 1 | — | 0 | — | — |
| Sat 11/14 | @ Minnesota | W 35-7 | 3 | 3 | — | 0 | 0 | — | 0 | — | — |
| Sat 11/7 | vs Michigan State | W 49-7 | 4 | 3 | — | 1 | 0 | — | 0 | — | — |
| Sat 10/31 | vs Northwestern | L 20-21 | 7 | 4 | — | 0.50 | 0 | — | 0 | — | — |
| Sat 10/24 | @ Purdue | L 20-24 | 2 | 0 | — | 0 | 0 | — | 0 | — | — |
Career Arc
Track team changes, role shifts, and season-to-season movement.
- 1
Northern Illinois
2017-2021
Opening stop
- 2
Iowa
2020
Final stop
Season Progression
20172018201920202021
| Season | Team | Primary | Efficiency | Usage | Delta |
|---|---|---|---|---|---|
| 2017 Regular Season | Northern Illinois | 1 | 5.5 | 1.1 | — |
| 2018 Regular Season | Northern Illinois | 8 | 16.8 | 4.7 | 7 |
| 2019 Regular Season | Northern Illinois | 11.5 | 24.4 | 10.3 | 3.5 |
| 2020 Regular Season | Iowa | 4.5 | 16.6 | 4.4 | -7 |
| 2021 Regular Season | Northern Illinois | 0 | — | — | -4.5 |
Signature Performances
Top Games
#1 Featured game
Toledo
Win with 2.5 impact plays across the defensive snap sheet.
2.5
Primary metric
2.5 disruption/tackle impact with 57.3 takeover score.
#2
Western Michigan
2.5
Primary metric
Win with 2.5 impact plays across the defensive snap sheet.
2.5 disruption/tackle impact with 51.3 takeover score.
#3
Akron
3
Primary metric
Win with 3 impact plays across the defensive snap sheet.
3 disruption/tackle impact with 50.5 takeover score.
#4
Ball State
2
Primary metric
Loss with 2 impact plays across the defensive snap sheet.
2 disruption/tackle impact with 46 takeover score.
#5
Penn State
2
Primary metric
Win with 2 impact plays across the defensive snap sheet.
2 disruption/tackle impact with 43.8 takeover score.
Top Seasons
#1 Season by value score
2019 Regular Season · Northern Illinois
11.5 primary output · 24.4 efficiency · 10.3 usage
32.1
#2
2020 Regular Season · Iowa
16.6
4.5 primary · 16.6 efficiency · 4.4 usage
#3
2018 Regular Season · Northern Illinois
14.9
8 primary · 16.8 efficiency · 4.7 usage
Milestones
0
Impact games
0
Splash games
0
10+ tackle games
Bio, Recruit, and Data Context
Recruit Profile
2★
Class 2016 · Rating 0.7833
Prophetstown · Prophetstown, IL
- Committed To
- Northern Illinois
- Commit Date
- Jan 1, 2016
Career Facts
2
Career teams
5
Seasons tracked
81
Career Tackles
Data Context
Coverage spans 5 tracked seasons, 36 games, and base opponent context only. Derived metrics fall back to raw production when share or rating context is missing.