Running back, Iowa State, 2019–⁠22

Jirehl Brock

Lettered 2020–⁠22 (school media guide)

Number
No. 21
Height
6′0″
Weight
220 lb
Class (2022)
Senior
Hometown
Quincy, IL

Jirehl Brock played running back at Iowa State (2019–⁠22).

Career highs

104rushing yards, career highvs. Southeast Missouri State, 2022

Rushing

Rushing yards, season by season, with his team’s record
SeasonTeamCarYdsAvgTDLong
2019Iowa State9485.3013
2020Iowa State13463.5011
2021Iowa State371744.7140
2022Iowa State994454.5361
Career1587134.5461

Receiving

SeasonTeamRecYdsAvgTDLong
2020Iowa State4328.0011
2021Iowa State7436.119
2022Iowa State211135.4113
Career321885.9213

Season lines from CollegeFootballData, regular season and bowls.

On the roster

SeasonTeamNo.PosClassHtWt
2019Iowa State21RBFr.
2020Iowa State21RBSo.
2021Iowa State21RBJr.
2022Iowa State21RBSr.6′0″220

As each season’s roster listed the player (CollegeFootballData). Classes before the latest listing are counted back from it; “Yr 1” is the year on file where that count can’t place a season he played (a redshirt, transfer or 2020 year); height and weight as last listed.

Per play

SeasonTeamPlaysEPA/playPctileMedianTotalUsageAdj. rush
2019Iowa State9-0.08––-0.7––
2020Iowa State170.20––3.4––
2021Iowa State440.12––5.46%0.21
2022Iowa State1280.0626th (n=470)0.147.717%0.10

Expected points added: how much the player’s plays moved the team’s expected score, per play and in total. Plays: total EPA divided by EPA per play, the plays the source credits to him (for a receiver roughly his catches and runs, not every target; for a passer, not every attempt), so it can differ from attempts plus carries. Percentile: against the position’s regulars that season across all divisions on file (quarterbacks with 150+ plays, backs 60+, receivers and tight ends 30+), with how many there were (n) and their median; a dash means too few plays to rank. A season in progress uses the full-season bar scaled by games played, never below 75 plays for quarterbacks, 30 for backs and 20 for receivers. The cohort grows or shrinks with the source’s coverage each season (2025 lists far more players), so compare percentiles rather than raw EPA across years. FCS seasons are marked. Usage: the share of the team’s plays the player was part of (shown from 20 plays). Adjusted pass and rush: EPA per play adjusted for the defenses faced (CollegeFootballData’s WEPA). From CollegeFootballData, 2013 on.

Game by game

2022 Iowa State 10 games, 445 rushing yards, 3 TD
DateOpponentResultCarRush ydsRush TDRecRec ydsRec TD
Sep 3vs.Southeast Missouri StateW 42–⁠101610411130
Sep 10atIowaW 10–⁠72710005180
Sep 17vs.OhioW 43–⁠1077604220
Sep 24vs.BaylorL 24–⁠31147313171
Oct 1atKansasL 11–⁠14180–––
Oct 8vs.Kansas StateL 9–⁠1013330200
Oct 15atTexasL 21–⁠24240130
Oct 29vs.OklahomaL 13–⁠27112203290
Nov 5vs.West VirginiaW 31–⁠144130160
Nov 12atOklahoma StateL 14–⁠204121150
2021 Iowa State 13 games, 174 rushing yards, 1 TD
DateOpponentResultCarRush ydsRush TDRecRec ydsRec TD
Sep 4vs.Northern IowaW 16–⁠10290–––
Sep 11vs.IowaL 17–⁠273150120
Sep 18atUNLVW 48–⁠3130–––
Sep 25atBaylorL 29–⁠316150–––
Oct 2vs.KansasW 59–⁠72300171
Oct 16atKansas StateW 33–⁠20260170
Oct 23vs.Oklahoma StateW 24–⁠21160–––
Oct 30atWest VirginiaL 31–⁠38–––160
Nov 6vs.TexasW 30–⁠7330–––
Nov 13atTexas TechL 38–⁠41140–––
Nov 20atOklahomaL 21–⁠28––––––
Nov 26vs.TCUW 48–⁠142411–––
Dec 29 ✦vs.ClemsonL 13–⁠20144203210
2020 Iowa State 4 games, 46 rushing yards
DateOpponentResultCarRush ydsRush TDRecRec ydsRec TD
Oct 10vs.Texas TechW 31–⁠15120–––
Nov 21vs.Kansas StateW 45–⁠092503260
Dec 5vs.West VirginiaW 42–⁠63190–––
Dec 19vs.OklahomaL 21–⁠27–––160
2019 Iowa State 2 games, 48 rushing yards
DateOpponentResultCarRush ydsRush TDRecRec ydsRec TD
Sep 21vs.UL MonroeW 72–⁠205400–––
Oct 5vs.TCUW 49–⁠24480–––

Box scores from CollegeFootballData, 2004 on. ✦ postseason; ★ a career high on file.

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