Lincoln Riley is beefing up the defensive coaching staff.
According to a report from Carey Murdock of SoonerScoop.com, former Notre Dame and Nebraska defensive coordinator Bob Diaco will join the Sooners in a defensive analyst position.
While at Notre Dame, Diaco earned the 2012 Broyles Award, given to the top assistant college football coach.
Diaco, who was Nebraska's defensive coordinator last season and Notre Dame's from 2010-13, would be the second former defensive coordinator helping Mike Stoops.
Last year, Riley brought on Ruffin McNeill to coach defensive tackles.