#21

Jirehl Brock

Senior running back for Iowa State. 2022: 445 rushing yards, 3 rushing TD, 21 catches.

RB · Iowa State · Sr. · #21

6′0″ · 220 lb · Quincy, IL

CFB Index 42 · #185 of 317 RBsHigh confidenceIowa State 2022 alumnus

Recruiting

4★

RB recruit

No. 261 nationally · Signed with Iowa State

No college snaps yet.

His career numbers, season by season

The story

4 running back for Iowa State. 2022: 445 rushing yards, 3 rushing TD, 21 catches.

Signed as a 4-star recruit to Iowa State in 2019.

His career, year by year

How it ended

Four seasons at Iowa State, 713 rushing yards — his college career is complete.

His career

He barely played early on. Then he did not come off the field.

2019

Signed with Iowa State4-star out of Quincy

Career arc

Recruit

★★★★

#261 national

CFB

College

Iowa State

2019–2022

NFL

NFL Draft

—

Not drafted

Coaching lineage · 2019–2022

1 coach

2019–2022

Matt Campbell

Iowa State

Played his entire career under Matt Campbell.

2022 snapshot

Season context · Team result + system

4 seasons under Matt Campbell — 27-23 over that span.

2019Iowa State7-6HC: Matt Campbell · Balanced

2020Iowa State9-3HC: Matt Campbell · Run-leaning

2021Iowa State7-6HC: Matt Campbell · Balanced, fast tempo

2022Iowa State4-8HC: Matt Campbell · Pass-leaning

Where this profile ranks vs the RB cohort

Box-score + play-by-play EPA percentiles

42Rotational starter #185 of 317?

High confidence13 metrics · season cumulative

Concern: success rate (4th percentile).

Real play-by-play efficiency

Explosive rate#280 / 398 · 30th pct

4.8%

TD rate#287 / 398 · 28th pct

2.9%

Yards / carry#297 / 398 · 26th pct

4.5

EPA / carry#362 / 398 · 9th pct

-0.05

Success rate#384 / 398 · 4th pct

31.7%

Box-score rates (8)

Receptions#64 / 338 · 80th pct

Long run#85 / 346 · 75th pct

Rec yards#128 / 338 · 62nd pct

113

Carries#169 / 346 · 51st pct

Fumbles lost#61 / 244 · 48th pct

Rush yards#186 / 346 · 46th pct

445

Rush TDs#209 / 346 · 34th pct

Yards / carry#226 / 346 · 33rd pct

4.5

Season trend

EPA / carry— first qualifying season

Success rate— first qualifying season

Explosive rate— first qualifying season

Yards / carry— first qualifying season

TD rate— first qualifying season

Percentiles versus same-position peers with enough snaps this season. Most bars are box-score rates; EPA / success-rate bars are computed from real play-by-play (offense only — no defensive EPA model exists yet).

Splits & context

Splits · Per-game

2022 season · 10 games

Home/Road · Season halves

Home vs Road

	YDS/g	YPC	TD/g
Home6g	53.5	5.1	0.3
Road4g	31.0	4.2	0.2

First half vs Second half

	YDS/g	YPC	TD/g
Weeks 1-77g	56.9	5.5	0.3
Weeks 8+3g	15.7	2.8	0.3

Supporting cast · Scheme

Staff and system around the player

2026 season

Head Coach

Jimmy Rogers

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

Awards

Player standing · 2022

Starter

A locked-in starting job.

Recognition

Roster2-deepStarterRecognizedEliteApex

Production · CFB Index Score

42 · #185 of 317 RBs

Former four-star. Now #185 at the position.

Career stats

Season	Team
2022	Iowa State	99	445	4.5	3	--
2021	Iowa State	37	174	4.7	1	--
2020	Iowa State	13	46	3.5	0	--
2019	Iowa State	9	48	5.3	0	--
Career		158	713	4.5	4	--

Season	Team
2022	Iowa State	21	113	5.4	1	--
2021	Iowa State	7	43	6.1	1	--
2020	Iowa State	4	32	8.0	0	--
2019	Iowa State	--	--	--	--	--
Career		32	188	5.9	2	--

Signature game

SIGNATURE GAME · Week 2 · 2022

W 10–7

at Iowa

100 rush yds (27 car)

A wire-to-wire battle — won by 3 on the road.

With H. Dekkers — 184 yds · 1 TD · 2 INT · QBR 68.7 · 14 rush yds (9 car) · T. Perkins — 46 AVG · 2 IN 20 · 52 LONG

Signature plays

Signature plays · top plays by |EPA|

The plays that mattered most

fact

Week 3 · Ohio · 1&10 · Q2 · EPA +3.78Jirehl Brock run for 61 yds to the Ohio 19 for a 1ST down
Week 4 · Baylor · 3&1 · Q4 · EPA +3.57Jirehl Brock 37 Yd Run (Jace Gilbert Kick)
Week 4 · Baylor · 4&2 · Q1 · EPA +2.85Hunter Dekkers pass complete to Jirehl Brock for 2 yds for a TD, (Jace Gilbert KICK)
Week 11 · Oklahoma State · 2&1 · Q3 · EPA +1.90Jirehl Brock run for 1 yd for a TD, (Drake Nettles KICK)
Week 2 · Iowa · 3&4 · Q1 · EPA +1.82Hunter Dekkers pass complete to Jirehl Brock for 5 yds to the IowSt 46 for a 1ST down
Week 1 · Southeast Missouri State · 2&4 · Q4 · EPA +1.67Jirehl Brock run for 23 yds to the SEMo 1 for a 1ST down
Week 4 · Baylor · 2&8 · Q3 · EPA -1.36Jirehl Brock run for a loss of 3 yards to the IowSt 40
Week 4 · Baylor · 3&1 · Q1 · EPA +1.34Jirehl Brock run for 5 yds to the Bayl 49 for a 1ST down
Week 2 · Iowa · 2&2 · Q3 · EPA -1.34Jirehl Brock run for a loss of 1 yard to the IowSt 33
Week 11 · Oklahoma State · 1&10 · Q3 · EPA +1.33Jirehl Brock run for 11 yds to the OKSt 2 for a 1ST down

Game log

Game log · Week-by-week

2022 season · 10 games

Box score · CFBD

Wk	Opp	CAR	YDS	AVG	TD	LONG	Note
Wk 1	W 42-10vs Southeast Missouri State	16	104	6.5	1	23	Season-high 104 yds
Wk 2	W 10-7@ Iowa	27	100	3.7	0	15
Wk 3	W 43-10vs Ohio	7	76	10.9	0	61
Wk 4	L 24-31vs Baylor	14	73	5.2	1	37
Wk 5	L 11-14@ Kansas	1	8	8.0	0	8
Wk 6	L 9-10vs Kansas State	13	33	2.5	0	6
Wk 7	L 21-24@ Texas	2	4	2.0	0	2
Wk 9	L 13-27vs Oklahoma	11	22	2.0	0	7
Wk 10	W 31-14vs West Virginia	4	13	3.3	0	4
Wk 11	L 14-20@ Oklahoma State	4	12	3.0	1	11
Total		99	445	4.7	3	61

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