Player Dossier

2021-2025

Northwestern

Yanni Karlaftis

LB • 6'3" • 235 lbs • West Lafayette, IN, USA

Ball-hunting defenderSplash play profile

Yanni Karlaftis shows a ball-hunting defender profile with 16.5 disruption score.

Usage / Role

13%

Rotational defensive role

lowfeatured

Impact Production

33

Developing production for a linebacker

lowelite

Reliability

35

Sporadic game-to-game production

lowhigh

Star Power

41

Limited ceiling signals so far

limitedstar

Career Arc

Value trend by season

Best season by Season Value: 2021 Regular Season · Purdue

2122232425

Snapshot

Career Teams
2
Unique Seasons
5
Program Path
Purdue • Northwestern
Peak Game
Peak game by takeover score: UConn

Player Story

Yanni Karlaftis built his college career from 2021 through 2025 as a linebacker from West Lafayette, IN wearing No. 14, spending time with Northwestern and Purdue. The clearest part of Yanni Karlaftis' career was his...

Read the story
4★

Recruit Profile

Class 2021 · Rating 0.9069

West Lafayette · West Lafayette, IN

Committed To
Purdue
Commit Date
Jan 1, 2021

Yanni Karlaftis, LB. Best season Best season by Season Value: 2021 Regular Season · Purdue. Yanni Karlaftis shows a ball-hunting defender profile with 16.5 disruption score.

Stat Footprint

Career production snapshot

Tackles
131
TFL
4.5
Sacks
3.5
QB hurries
6
Passes defended
4

Quick Answers

Yanni Karlaftis quick answers

Latest team and position
Northwestern · LB
Career Tackles
131
Tracked sample
5 unique seasons · 5 entries · 30 games
Best season
2021 Regular Season · Purdue
Top game
UConn
Recruit profile
4-star · West Lafayette · Purdue
High school pipeline
West Lafayette · 8 FBS recruits · 1 drafted player
Latest roster
No. 14 · Senior
2025 Tackles rank
11 tackles · LB 743rd (top 59%) · Big Ten 356th (top 46%) · National 2,872nd (top 47%)

Season Ledger

Crawlable season-by-season stats

SeasonTeamGamesTacklesTFLSacksQB HurPDTDOverall
2021 Regular SeasonPurdue14-032091.7
2022 Regular SeasonPurdue240.50.5--027.6
2023 Regular SeasonPurdue12552.52.5--044.2
2024 Regular SeasonPurdue11571.50.521048.5
2025 Regular SeasonNorthwestern411-011034.9

Related Context

Transfer Portal History

Matched portal movement

SeasonPathMovementValueDate
2025Purdue to NorthwesternP4 to P479.1Dec 20, 2024

Yanni Karlaftis played LB for Purdue and Northwestern. Across 5 tracked seasons, Yanni Karlaftis recorded 131 tackles. His top tracked season came in 2023 with Purdue.

Player insights

Lead takeaway

Best season by value score: 2021 Regular Season

Purdue paired 5 primary output with 66.7 efficiency.

Supporting note

2025 Regular Season role shape

impact-led usage with 16.5 efficiency.

Supporting note

Career value cooled off

2025 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 Purdue, Northwestern.

Supporting note

Peak game by takeover score: UCLA

Win with 1 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.

2025 Regular Season · Northwestern

Games

4

Havoc Plays / G

0.5

Efficiency

16.5

Usage

4

Consistency

50

Best Game by takeover score

UCLA

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.

1234

Chronological game order.

Game by game trend chart. Tulane: 1. Western Illinois: 0. Oregon: 0. UCLA: 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. Tulane: 4 by 26.7. Western Illinois: 3 by 12.5. Oregon: 2 by 8.3. UCLA: 2 by 18.3

Split Comparison

Compare how this player performed across different situations. "Games" shows how many matchups are included in each split.

Wins0.5 · Games = 2 · +0 vs Losses
Losses0.5 · Games = 2 · +0 vs Wins

Game Log

Dense stat lines with inline explanations and season-linked highlights.

4 games

Featured metric

Havoc Plays

Top game by takeover score

UCLA

Best efficiency game

26.7 vs Tulane

Result
Sat 9/27vs UCLAW 17-1420000
Sat 9/13vs OregonL 14-3421000
Fri 9/5vs Western IllinoisW 42-732000
Sat 8/30@ TulaneL 3-2343001

Player Story

Yanni Karlaftis story

Yanni Karlaftis built his college career from 2021 through 2025 as a linebacker from West Lafayette, IN wearing No. 14, spending time with Northwestern and Purdue. The clearest part of Yanni Karlaftis' career was his defensive production: 131 tackles, 4.5 tackles for loss, 3.5 sacks, and 4 passes defended across 30 career games in the available record. His largest box-score season came in 2023 with Purdue. Those numbers show where he fit, how often the ball or action found him, and how his role developed over time.

Defensive careers can be hard to read from one number, but Yanni Karlaftis' production has multiple signals. With 30 career games in the available record, his career has enough shape to show both opportunity and production across Northwestern and Purdue.

The arc is straightforward: Yanni Karlaftis moved through the depth chart, found a larger role, and turned that opportunity into production that can be understood through standard football numbers.

Career Arc

Track team changes, role shifts, and season-to-season movement.

  1. 1

    Purdue

    2021-2024

    Opening stop

  2. 2

    Northwestern

    2025

    Final stop

Season Value Progression

20212022202320242025
SeasonTeamPrimaryEfficiencyUsageDelta
2021 Regular SeasonPurdue566.714.1
2022 Regular SeasonPurdue113.33.3-4
2023 Regular SeasonPurdue523.35.44
2024 Regular SeasonPurdue526.16.70
2025 Regular SeasonNorthwestern216.54-3

Signature Performances

Top Games

#1 Featured game

@ UConn

Week 2 · W 49-0

Win with 5 impact plays across the defensive snap sheet.

5

Havoc Plays

88.9 takeover

5 disruption/tackle impact with 88.9 takeover score.

#2

vs Illinois

Week 5 · W 44-19 · Conference game

2

Havoc Plays

84.4 takeover

Win with 2 impact plays across the defensive snap sheet.

2 disruption/tackle impact with 84.4 takeover score.

#3

vs Nebraska

Week 5 · L 10-28 · Conference game

2

Havoc Plays

84.4 takeover

Loss with 2 impact plays across the defensive snap sheet.

2 disruption/tackle impact with 84.4 takeover score.

#4

@ Northwestern

Week 12 · L 15-23 · Conference game

2

Havoc Plays

81.7 takeover

Loss with 2 impact plays across the defensive snap sheet.

2 disruption/tackle impact with 81.7 takeover score.

#5

vs Oregon

Week 8 · L 0-35 · Conference game

1

Havoc Plays

64.4 takeover

Loss with 1 impact plays across the defensive snap sheet.

1 disruption/tackle impact with 64.4 takeover score.

Top Seasons

#1 Season by Season Value

2021 Regular Season · Purdue

5 primary output · 66.7 efficiency · 14.1 usage

91.7

#2

2024 Regular Season · Purdue

48.5

5 primary · 26.1 efficiency · 6.7 usage

#3

2023 Regular Season · Purdue

44.2

5 primary · 23.3 efficiency · 5.4 usage

Milestones

7

Impact games

4

Splash games

0

10+ tackle games