Brock Dieu is a redshirt senior lineman entering his final season at WSU in 2025.

Dieu is from Queen Creek, Arizona, and played high school football at Casteel High School. He was named to the all-state first team as a freshman, instantly proving himself as a top lineman in the state. He again earned a first-team all-state nod in his junior year.

ESPN ranked him as the No. 14 prospect in the state of Arizona and as the No. 61 guard in the country. He committed to WSU in 2021 and appeared in one game, using a redshirt for his freshman year.

In 2022, as a redshirt freshman, Dieu appeared in three games as a backup. He broke out in 2023 as a redshirt sophomore, appearing in 11 games and starting eight. He started two games at left guard and six at right guard.

Last season, Dieu continued his role on the line, starting in all 13 games for the Cougs. He started the first ten games at right guard and transitioned to center for the team’s final two regular-season games against Oregon State and Wyoming. In the Holiday Bowl against No. 21 Syracuse, he returned to right guard.

Dieu allowed seven pressures and did not allow a single sack in 508 pass-blocking stats, proving himself as one of the top pass-blockers in the Mountain West.