Mercury Morris, the former running back for the Miami Dolphins and San Diego Chargers who won two Super Bowl titles, has died, his family said Sunday. He was 77 years old.

Morris’ son, Troy-Jeffery, released a statement on X regarding his father’s death, asking for privacy as they deal with the former NFL star’s passing.

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Dolphins running back Mercury Morris on the bench against the New York Jets at the Orange Bowl in Miami, November 19, 1972. (Malcolm Emmons-USA Today Sports)

“It is with profound sadness that we announce the passing of Eugene ‘Mercury’ Morris, legendary Miami Dolphins running back and valued member of the NFL family, at the age of 77,” the statement said. “Known for his electrifying speed and dynamic play, Mercury was a cornerstone of the Dolphins’ historic undefeated season in 1972 and a two-time Super Bowl champion. His talent and passion left an indelible mark on the sport, and his three-time Pro Bowl selection cemented his place among football’s greats.

“Off the field, Mercury was a devoted father, a loving brother, a loyal friend and a pillar of the community. His presence extended far beyond football as he touched the lives of many during his time in Miami.”

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Miami Dolphins running back Mercury Morris in action against the Baltimore Colts at Memorial Stadium in Baltimore, December 11, 1971. (Malcolm Emmons-USA Today Sports)

The Dolphins selected Morris in the third round of the 1969 NFL Draft out of West Texas A&M. He developed into a Pro Bowl-caliber running back during the 1971 season and had his big breakout season during the 1972 season, when the Dolphins went undefeated and won the title.

In 1972, Morris led the NFL with 12 rushing touchdowns and ran for 1,000 yards for the first and only time in his career. He and Larry Csonka became the first running back duo to reach the 1,000-yard mark in the same season.

He ended his career with the Chargers in 1976.

Miami Dolphins running back Mercury Morris carries the ball against the Minnesota Vikings during Super Bowl VIII at Rice Stadium in Houston, Texas, January 13, 1974. (Rod Hanna-USA Today Sports)

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Morris leaves behind five children.

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