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Preston Rex transitions from safety to running back for BYU

Yahoo Sports • 1 min read • Latest: Aug 15, 2026, 3:00 AM

Last updated Aug 15, 2026

Preston Rex transitions from safety to running back for BYU

Summary

Preston Rex is shifting from safety to running back for BYU ahead of the 2026 season. The move came at the suggestion of head coach Kalani Sitake, just before fall camp in 2025. Rex, who has had a tumultuous career marked by an ACL injury and limited playing time, has embraced the change and expressed enthusiasm about the transition. With two years of eligibility remaining, he looks to carve out a role behind starter LJ Martin after showing promise last season with 13 carries for 30 yards and three receptions for 50 yards in 12 games. Rex feels better prepared and is ready to contribute to the team’s success this season.

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Status Watch

•Preston Rex was advised to change positions by head coach Kalani Sitake.
•He recorded 13 carries for 30 yards in 2025 and has two years of eligibility left.
•Rex benefited from a full offseason to learn running back fundamentals.
•His transition aligns with team needs after the dismissal of a key running back.
•BYU's running back depth chart includes Rex, LJ Martin, and others.

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