At 38 years old, Grinch is relatively young in the college football coaching fraternity, but he has already earned a reputation as one of the brightest defensive minds in the game today. It’s not by coincidence that Grinch is now at Oklahoma.
Both he and head coach Lincoln Riley are proteges of veteran college head coach Mike Leach, who, as many Sooner fans recall, was the OU offensive coordinator the first season under Bob Stoops.
Riley was 33 when Stoops hired him in 2015 to run the Oklahoma offense, touting him at the time as one of the best young offensive minds in the game.