On September 1, 2017, Brents committed to the University of Iowa to play college football.[2] Brents was ranked as the 33rd best safety (football) in the country and the number 401 prospect overall by 247Sports.com at the time of the signing of his letter of intent to play for Iowa.[2] The 6'2" Brents was a highly recruited college prospect, declining scholarship offers from Michigan State, Indiana, Cincinnati, and Louisville, among others.[2]
Brents made it back from his junior year injury to start the first game of the 2017 season, his senior year, during which he logged 11 tackles in action against one of Indiana's top-ranked schools.[3] The following week, Brents recorded his first interception of the year in game action against Pike High School of Indianapolis.[3] Brents would finish the season strong, culminating in selection to the 2017 Central Indiana Super Team named by the Indianapolis Star.[4]
College career
2018 season
Brents made his way to Iowa City in the summer of 2018 to begin pre-season practice with the Hawkeyes. The true freshman was quick to impress, emerging as the number 3 cornerback on the team's depth chart by the end of August.[5] Brents was listed as the reserve left cornerback and as slated to play as the so-called "nickelback" in five defensive back sets.[6]
Brents was thrust into the limelight in the Hawkeyes' fourth game of the season, a loss to Wisconsin, when starting corner Matt Hankins was forced out of the game with an injury.[7] He made the first start of his career the on October 6 against Minnesota, a wild coming-out party in which he contributed his first interception, two pass break-ups, and made three tackles in an exciting 48–31 victory.[8] Brents made a total of five starts as a freshman, gaining accolades before being himself forced from action due to minor "tweak" injuries down the stretch.[9]
2019 season
Brents' 2019 sophomore season did not begin auspiciously when a preseason knee injury forced him to miss Iowa's opener[10] and the next three games.[11] He would see only limited play at the safety position in the team's fifth game, a 10–3 loss to Michigan.[11]
The knee injury continue to keep him hobbled, however,[12] and he wound up receiving a red shirt for the season.[13]
One saving grace, Brents later recalled, was that he shared extensive time in rehabilitation with Hawkeyes' defensive coordinator Phil Parker, who was himself recovering from knee surgery.[14] "I gained a lot of knowledge from him, from his viewpoint, how he sees things," Brents noted. "It's helped me to see a lot of things differently, especially on the field."[14] Chiefly among these lessons imparted was the value of film study. "The game really does just slow down when you sit down and study," Brents said. "My freshman year, maybe I was playing more on my athleticism."[14]
2020 season
Brents' redshirt sophomore season proved to be a bitter disappointment. Sidelined for almost the whole of the previous year, Brents found it hard to crack Iowa's starting defensive backfield, winding up relegated to special teams and spot reserve work in the defensive backfield, fifth on the cornerback depth chart.[15]
Over the course of his career at Iowa, Brents wound up playing in 18 games — five of which he started — recording 17 tackles and one interception.[15]
2021 season
Brents arrived at Manhattan, Kansas early in 2021 and made an immediate impression at Kansas State University during spring football practice. K-State defensive coordinator Joe Klanderman was most enthusiastic, proclaiming Brents to have been "outstanding" and calling him "dominant" and an "alpha-male type athlete."[17] "He's learned what we're doing, he's transitioned well into what we're doing," Klanderman declared, adding "he's not a guy that just does it right, but can make the play and finish when he gets the opportunity. He's going to be a good one."[17]
In two years at Kansas State, JuJu Brents started 27 games and recorded 94 tackles and five interceptions. He was named as an first-team All-Big 12 player as a senior in 2022.[18]
After trading back with both the Las Vegas Raiders and the Atlanta Falcons to collect two additional late round picks, Indianapolis Colts general manager Chris Ballard selected Brents in the second round of the 2023 NFL draft, using the 44th overall pick.[18] He recorded his first NFL interception in Week 6 against the Jacksonville Jaguars.[21]
He played in nine games with eight starts, recording 43 tackles, one forced fumble, one interception, and six passes defensed.[22]
On September 10, 2024, Brents was placed on injured reserve with a with a season-ending knee injury.[23]