Junior (2026-27)
- Scored his first NCAA goal in ASU's 5-4 victory over UMass Lowell on Oct. 16, finishing the two-game road sweep with two points (1G, 1A).
- Collected a secondary assist on Beck’s OT GWG against Holy Cross on Oct. 10.
- Made his NCAA debut on Oct. 2 and registered his first NCAA point on Oct. 3 with a primary assist against Lindenwood.
Before ASU - O'Brien is eligible to compete for Arizona State and was granted two seasons of eligibility following recent NCAA eligibility changes allowing student-athletes who previously competed in major junior hockey to retain NCAA eligibility. His prior ECHL participation does not prevent him from competing collegiately because his professional participation falls within the NCAA's updated eligibility framework.
- The 6-1, 190-lb. winger totaled 68 points (35G, 33A) over 97 games in his two-year career and was named a 2026 ECHL all-star.
- O'Brien previously spent four seasons with Portland of the WHL, where he tallied 194 points (63G, 131A) in 255 career games.