Brennan Hagar was promoted to interim assistant coach on the Nebraska volleyball coaching staff in January 2025. Hagar works with Nebraska's middle blockers.
Hagar spent two years as a graduate assistant for the Huskers during the 2023 and 2024 seasons. During that span, the Huskers went 66-5, won two Big Ten titles and reached the NCAA Semifinals both years.
Prior to coming to Nebraska, Hagar played outside hitter at Ottawa University in Kansas. He was a two-time first-team All-GPAC selection. In 2021 he ranked 48th in the NAIA in kills per set (2.8) with 20 aces, 115 digs and 25 blocks. In 2022, Hagar averaged 2.5 kills per set with 14 aces, 125 digs and 45 blocks.
Hagar has also served as a club coach for Volleyball Club Nebraska.