Dasmond Tautalatasi is not an unknown.
He started nine games at safety for Arizona State in 2017 in his breakout junior season, proving to be a big hitter and capable of making touchdown-saving plays.
Evan Fields played as a true freshman behind Tautalatasi, making one start and showing glimpses of why he was rated by recruiting services as one of the top 10 high school seniors in Oklahoma in 2016.
Both were a bigger part of Phil Bennett's defense than Tyler Whiley, which is not to take anything away from Whiley's emergence in new defensive coordinator Danny Gonzales' 3-3-5 scheme at what is now called the Tillman.