DENVER (AP) — Joe Collier, the former Buffalo Bills head coach and architect of the Denver Broncos’ famed “Orange Crush” defense, has died. He was 91.

The Broncos said Collier’s family confirmed that he died at his Littleton, Colorado, home on Monday night.

“Joe Collier is one of the most impactful coaches in the history of the Denver Broncos and regarded among the best defensive coordinators of all time,” the Broncos said in a statement. “He was an innovator in the NFL with his 3-4 defense, helping the Broncos to three Super Bowl appearances during a legendary career with our franchise that spanned more than two decades.

“Intelligent, modest and soft-spoken, Collier provided steady leadership to five different head coaches as the Broncos emerged as perennial contenders in the 1970s and 1980s. His profound influence on countless players and coaches in Denver included 12 Broncos Ring of Famers, 11 Pro Bowl selections and 2024 Pro Football Hall of Fame linebacker Randy Gradishar.”