After a couple seasons of relative stability following the surprise retirement of coach Bob Stoops, Oklahoma has re-shaped its defensive coaching staff prior to the 2019 season.
As of press time, the Sooners' offensive staff remains unchanged from the 2018 season when they had the No. 1 attack in the country according to S&P+.
But coach Lincoln Riley made three changes on the defensive side of the ball, led by defensive coordinator Alex Grinch.
Here's a breakdown of the changes:
Alex Grinch, Defensive coordinator/Safeties coach
Riley hired away defensive coordinator Alex Grinch from Ohio State.