#21

Marcus Williamson

Senior cornerback on Ohio State's 2021 roster.

CB · Ohio State · Sr. · #21

5′10″ · 186 lb · Westerville, OH

CFB Index 30 · #308 of 321 cornersLow confidenceOhio State 2021 alumnus

Recruiting

4★

CB recruit

No. 184 nationally · Signed with Ohio State

No college snaps yet.

His career numbers, season by season

The story

4 cornerback on Ohio State's roster.

Signed as a 4-star recruit to Ohio State in 2017.

His career, year by year

How it ended

Five seasons at Ohio State, 67 tackles — his college career is complete.

His career

He was on the field for 5 seasons. That is rarer than it sounds.

20174 games

Signed with Ohio State4-star out of IMG Academy

Career arc

Recruit

★★★★

#184 national

CFB

College

Ohio State

2017–2021

NFL

NFL Draft

—

Not drafted

Coaching lineage · 2017–2021

2 coaches

2017–2018

Urban Meyer

Ohio State

2019–2021

Ryan Day

Ohio State

era →

Coaching transition mid-career: Urban Meyer → Ryan Day. Worth noting in scheme + development context.

2021 snapshot

Season context · Team result + system

2017Ohio State12-2HC: Urban Meyer · Run-leaning

2018Ohio State13-1HC: Urban Meyer · Balanced, fast tempo

2019Ohio State13-1HC: Ryan Day · Run-heavy, fast tempo

2020Ohio State7-1HC: Ryan Day · Run-leaning, fast tempo

2021Ohio State11-2HC: Ryan Day · Balanced, fast tempo

Where this defender ranks vs the field

Box-score production percentiles vs the position cohort

30Below cohort / limited sample #308 of 321?

Low confidence6 metrics · season cumulative

Concern: sacks (24th percentile).

Box-score production (6)

Passes defended#481 / 2743 · 78th pct

Solo tackles#1273 / 2743 · 52nd pct

Tackles#1593 / 2743 · 41st pct

Tackles for loss#1640 / 2743 · 37th pct

1.5

QB hurries#1413 / 2743 · 24th pct

Sacks#1435 / 2743 · 24th pct

0.0

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 & context

Splits · Per-game

2021 season · 11 games

Home/Road · Season halves

Home vs Road

	TKL/g	TFL/g	SACK/g	PD/g
Home7g	2.7	0.2	0.0	0.1
Road4g	1.8	0.0	0.0	0.5

First half vs Second half

	TKL/g	TFL/g	SACK/g	PD/g
Weeks 1-75g	2.4	0.1	0.0	0.2
Weeks 8+6g	2.3	0.2	0.0	0.3

Supporting cast · Scheme

Staff and system around the player

2026 season

Head Coach

Ryan Day

Scheme reads (pass share, tempo, sack rate) need at least 3 team games — 2 games in so far.

Awards

Player standing · 2021

Rotational

Tackle volume for the position in rotation-piece range.

Recognition

Roster2-deepStarterRecognizedEliteApex

Production · CFB Index Score

30 · #308 of 321 corners

Former four-star. Now #308 at the position.

Career stats

Season	Team
2021	Ohio State	26	18	1.5	3	--	--
2020	Ohio State	27	20	0.0	2	--	--
2019	Ohio State	7	5	0.0	--	--	--
2018	Ohio State	1	1	0.0	--	--	--
2017	Ohio State	6	5	0.0	--	--	--
Career		67	49	1.5	5	--	--

Game log

Game log · Week-by-week

2021 season · 11 games

Box score · CFBD

Wk	Opp	TKL	SOLO	TFL	INT	PD	Note
Wk 2	L 28-35vs Oregon	1	1	0.0	—	0
Wk 3	W 41-20vs Tulsa	1	1	0.0	—	0
Wk 4	W 59-7vs Akron	3	2	0.0	—	0
Wk 5	W 52-13@ Rutgers	2	0	0.0	—	1
Wk 6	W 66-17vs Maryland	5	2	0.5	—	0
Wk 8	W 54-7@ Indiana	2	2	0.0	—	0
Wk 9	W 33-24vs Penn State	6	5	1.0	—	0	Season-high 6 tackles
Wk 10	W 26-17@ Nebraska	1	1	0.0	—	1
Wk 11	W 59-31vs Purdue	2	1	0.0	—	0
Wk 12	W 56-7vs Michigan State	1	1	0.0	—	1
Wk 13	L 27-42@ Michigan	2	2	0.0	—	0
Total		26	18	1.5	—	3

Stats from CFBD · ESPN · fan discourse. Every figure computed from source tables — not invented. Methodology

Marcus Williamson

20174 games

2021 snapshot

Splits & context

Awards

Rotational

Career stats

Game log

How he plays

DNA match

Cover Corner

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