Sue Ogrocki/AP Photo
In this Tuesday, Aug. 5. 2014 photo, Oklahoma quarterback Baker Mayfield throws during a team practice in Norman, Okla.
Football nears in Norman, Okla., with spring practice starting Saturday, March 5.
The Sooners returns a majority of their 2015 group, and this spring will serve as a stepping stone for a team looking to return to the College Football Playoff.
With the off-season continuing to roll, here are five storylines heading in to spring ball:
No. 1: OU's defensive line needs new leader.
An obvious narrative to begin with this spring is what will OU do to replace defensive line coach Diron Reynolds.