The Miami Dolphins announced Monday that former head coach Don Shula died Monday morning at the age of 90:

One of his children confirmed the news to Barry Jackson of the Miami Herald.

Shula is the winningest coach in NFL history, earning 328 regular-season victories in 33 years with the Dolphins and Baltimore Colts.

The news resulted in an outpouring of support from the NFL community:

Shula began his time in the NFL with a seven-season playing career as a defensive back, including the inaugural Colts season in 1953. Just six years after retiring in 1957, he was a 33-year-old head coach in the NFL for Baltimore in 1963.

The seven-year run for the Colts included three NFL Coach of the Year awards and a trip to the Super Bowl in 1968.

He joined the Dolphins in 1970 and quickly turned that franchise into a winner, winning back-to-back Super Bowl titles in the 1972 and 1973 seasons. The 1972 squad finished 14-0 and remains the only undefeated champion in NFL history.

His career with Miami spanned 26 seasons and featured only two losing records, and he made the playoffs more than any other coach, appearing in 19 different postseasons.

Shula finished his coaching career in 1995, ranking second to only George Halas with 490 games coached, and his prowess on the sidelines helped him earn induction into the Football Hall of Fame in 1997.