Senior defensive tackle for Nevada. 2021: 0.5 sacks, 2 tackles for loss, 16 tackles.
6′2″ · 265 lb · Reno, NV
CFB Index
A single number blending on-field production (an EPA-based value lane) with box-score output for this player's position.
0-100, scaled within each position's own cohort — not directly comparable across positions.
The story
4 defensive tackle for Nevada. 2021: 0.5 sacks, 2 tackles for loss, 16 tackles.
The record fills in as he plays.
His career, year by yearZak Mahannah
Wins his gap play after play. Zak Mahannah has played for two head coaches in three seasons at Nevada. One game to point at: 3 tackles, 1 TFL against Colorado State — Week 13, 2021.
Low coverage — composed from the verified record.
How it ended
Three seasons at Nevada, 36 tackles — his college career is complete.
Career arc
Coaching lineage · 2019–2021
2 coachesCoaching transition mid-career: Jay Norvell → Vai Taua. Worth noting in scheme + development context.
Season context · Team result + system
Where this defender ranks vs the field
Box-score production percentiles vs the position cohort
Concern: tackles (18th percentile).
Percentiles are versus same-position peers with enough snaps this season, based on box-score production. There are no play-by-play efficiency bars here: CFBD's play-value model credits offensive players only, so no defensive EPA exists to rank.
Splits · Per-game
2021 season · 8 games
Home vs Road
| TKL/g | TFL/g | SACK/g | PD/g | |
|---|---|---|---|---|
| Home4g | 2.0 | 0.2 | 0.0 | 0.0 |
| Road4g | 2.0 | 0.2 | 0.1 | 0.0 |
First half vs Second half
| TKL/g | TFL/g | SACK/g | PD/g | |
|---|---|---|---|---|
| Weeks 1-74g | 1.8 | 0.0 | 0.0 | 0.0 |
| Weeks 8+4g | 2.2 | 0.5 | 0.1 | 0.0 |
Supporting cast · Scheme
Staff and system around the player
Head Coach
Jeff Choate
Scheme reads (pass share, tempo, sack rate) need at least 3 team games — 2 games in so far.
Player standing · 2021
Tackle volume for the position in rotation-piece range.
Recognition
Production · CFB Index Score
Game log · Week-by-week
2021 season · 8 games
| Wk | Opp | TKL | SOLO | TFL | SACK | INT | PD | Note |
|---|---|---|---|---|---|---|---|---|
| Wk 1 | W 22-17@ California | 2 | 1 | 0.0 | 0.0 | — | 0 | |
| Wk 2 | W 49-10vs Idaho State | 1 | 1 | 0.0 | 0.0 | — | 0 | |
| Wk 3 | L 17-38@ Kansas State | 2 | 2 | 0.0 | 0.0 | — | 0 | |
| Wk 7 | W 34-17vs Hawai'i | 2 | 1 | 0.0 | 0.0 | — | 0 | |
| Wk 9 | W 51-20vs UNLV | 3 | 2 | 1.0 | 0.0 | — | 0 | Season-high 3 tackles |
| Wk 11 | L 21-23@ San Diego State | 1 | 1 | 0.0 | 0.0 | — | 0 | |
| Wk 12 | L 39-41vs Air Force | 2 | 2 | 0.0 | 0.0 | — | 0 | |
| Wk 13 | W 52-10@ Colorado State | 3 | 1 | 1.0 | 0.5 | — | 0 | |
| Total | 16 | 11 | 2.0 | 0.5 | — | 0 |
Play style
Stout at the point of attack — steady tackle-for-loss production without a standout pass-rush number.
CFB Index positional classification
Activity vs finishing · season enumeration
What the box score actually says
16 tackles. 0 passes defended. 0 interceptions. 2 TFL.
Counts only, never a rate — splash-event sample sizes this small (interceptions, pass breakups, TFL) are noise as a rate and signal only as a tally.
Player DNA
Stout at the point of attack — steady tackle-for-loss production without a standout pass-rush number.
His 2021 production profile sits closest to J'arius Warren’s 2020 season.
Matches J'arius on
Not enough data yet for this comparison.
As a junior, his production profile tracks closest to Ryan Johnson's junior season at Akron (2022).
Matches Ryan on
Player DNA