Marvelous Marvin Hagler dies at 66

Former boxing champion Marvelous Marvin Hagler has died, according to his wife, Kay G. Hagler. He was 66.

"I am sorry to make a very sad announcement. Today, unfortunately my beloved husband Marvelous Marvin has passed away unexpectedly at his home here in New Hampshire," Hagler wrote on her husband's Facebook fan page. "Our family requests that you respect our privacy during this difficult time. With love."

The Newark, New Jersey, native was the undisputed middleweight champion from 1980-87 thanks to an incredible 78% knockout percentage.

Hagler's title defense against Tommy "The Hitman" Hearns on April 15, 1985, is widely considered as one of the greatest bouts in boxing history despite lasting only eight minutes and one second.

Hagler retired from boxing following a controversial split-decision loss to Sugar Ray Leonard in 1987. He finished his career with a 62-3-2 record and 52 knockouts.

Following his retirement, he was inducted into the International Boxing Hall of Fame, as well as the World Boxing Hall of Fame.