As Oklahoma heads into the 2025 season, the defensive plans for the Sooners will largely remain unchanged, despite the departure of defensive coordinator Zac Alley. While coaching changes can often signal a shift in philosophy, OU’s defensive approach is set to stay the course, relying on continuity and stability to build on the foundation laid in previous seasons.

Zac Alley’s exit, after a brief tenure with the program, might have raised questions about the direction of Oklahoma’s defense. However, head coach Brent Venables and the coaching staff have made it clear that the defensive principles established under Venables’ leadership will continue. Venables, known for his aggressive, fast-paced defensive schemes, has a clear vision for what he wants to achieve in Norman, and that vision doesn’t require drastic changes to adjust to a new coordinator.

The Sooners have already made strides in recent years to improve their defense, an area that had been a significant concern prior to Venables’ arrival. Under Venables, Oklahoma’s defense has become more disciplined, more physical, and more aligned with the type of high-pressure, fast-moving schemes that he was known for during his time as Clemson’s defensive coordinator. While Alley’s exit may mean slight changes in the day-to-day operation of the defense, the broader goals and strategies will stay the same.

One key reason for this continuity is the strength of the coaching staff surrounding Venables. Oklahoma has assembled a group of experienced defensive minds who are well-versed in Venables’ system. While Alley’s role was pivotal in helping implement defensive plans, the program’s defensive identity is firmly rooted in Venables’ philosophy. That consistency provides a sense of stability as Oklahoma transitions to the 2025 season.

Moreover, the defense has experienced a gradual improvement since Venables took over as head coach. Last season, the Sooners saw marked improvements in key defensive metrics, including turnovers and scoring defense, areas that are typically indicative of success in Venables’ systems. With talented players returning, particularly in the front seven and in the secondary, Oklahoma is poised to continue its defensive development without a significant change in structure or focus.

Venables has made it clear that his defensive vision is one of relentless pressure and physicality, and the Sooners will keep leaning into that approach in 2025. Despite the loss of a coordinator, the culture and principles that have been established will provide the foundation for continued improvement, setting the stage for Oklahoma’s defense to remain a strong force in the Big 12 and on the national stage.