to learn more about new Purdue defensive coordinator Bob Diaco, who ran Holtz's defense at Louisiana Tech in 2019.
https://purdue.rivals.com/news/skip-holtz-on-bob-diaco-he-is-good-at-what-he-does-
https://purdue.rivals.com/news/skip-holtz-on-bob-diaco-he-is-good-at-what-he-does-