Revered longtime NFL head coach Don Shula passed away at the age of 90 on Monday, May 4, and the sports world mourned the two-time Super Bowl champion with the Miami Dolphins. Fellow Florida NFL franchise head coach Bruce Arians of the Tampa Bay Buccaneers took to social media to grieve for Shula.

“We lost the greatest coach of all time,” Arians, 67, wrote on Twitter on Monday morning. “RIP Coach Don Shula.”

Arians, entering his second year, and the Buccaneers hope to bring a Super Bowl back to the state of Florida following the high-profile acquisition of future Hall of Fame quarterback Tom Brady in free agency earlier this spring. The Buccaneers were the last Florida team (out of the Dolphins, Bucs, and Jaguars) to capture the Vince Lombardi Trophy when Jon Gruden's 2002-03 team won it.

Shula led the Dolphins to back-to-back Super Bowl victories in 1973-74, including the perfect season en route to winning Super Bowl VII over the Washington Redskins 14-7. Miami went 14-0 in the regular season before the league expanded the slate of games to 16.

Arians never spent time on the same coaching staff as Shula, who would coach the Dolphins from 1970-95. Arians' first professional gig was with the Kansas City Chiefs from 1989-92 as the running backs coach. Arians would later, however, serve as the quarterbacks coach for the Indianapolis Colts, as Shula was the head coach of the then-Baltimore Colts for seven years, going to the third Super Bowl in 1968-69.

For Arians, Shula was the great coach ever, and his passing brings a mourning period for everybody who has ever participated in the NFL.