In his first career game in 2021, Reid tallied 15 tackles, a sack, and an interception in a win over
Washington State, earning
Pac-12 Conference freshman of the week honors. He finished the season with 45 tackles with two of them going for a loss, a sack, two pass deflections, and an interception. In week 3 of the 2022 season, Reid intercepted a pass and had half a sack in a 35–7 win over
San Diego State. In week 12, he recovered a fumble and returned it 11 yards for a touchdown in a 20–17 loss to
Oregon. Reid finished his 2022 season with 72 tackles with 9.5 being for a loss, five sacks, three pass deflections, an interception, a fumble recovery, a forced fumble, and a touchdown, and was named second-team all-Pac-12. Ahead of the 2023 season, Reid was named to the
Butkus Award watchlist, which is awarded to the nation's best linebacker, as well as a preseason first-team all-Pac-12 selection. In 2023, he appeared in 11 games, posting 67 tackles with two tackles for loss, four pass deflections, and one interception, earning second-team all-Pac-12 honors. ==Professional career==