In Carter's first season he recorded just one tackle versus Alabama.[4] In 2020, he tallied 11 tackles with 2.5 going for a loss, and a sack, along with one reception for 11 yards.[5] Carter had a career performance in week three, tallying three tackles, one sack, and two forced fumbles in Duke's win over Northwestern.[6] He finished the 2021 season with 36 tackles and 7.5 going for a loss, 4.5 sacks, three pass deflections, and four forced fumbles.[7] For his performance, Carter earned third-team all-Atlantic Coast Conference (ACC) honors.[8] He opened the 2022 season strong, as in week two he tallied four tackles with one being for a loss, a sack, and a forced fumble, as he would help the Blue Devils beat Northwestern 31–23.[9] In week eight, Carter racked up two tackles with one being for a loss, a fumble recovery, and a forced fumble in a 45–21 win over Miami.[10] In their next game, he totaled five tackles with two going for a loss, and two sacks, as he helped the Blue Devils beat Boston College and become bowl eligible for the first time since 2018.[11] Carter finished the 2022 season with 36 tackles and 11 being for a loss, 5.5 sacks, four pass deflections, three fumble recoveries, three forced fumbles, and a touchdown.[12] For his performance, he earned second-team all-ACC honors.[13] Ahead of the 2023 season, Carter was named to the preseason all ACC first team, as well as to the Bronco Nagurski award preseason watch list.[14][15]