Marvelous Marvin Hagler has passed away at age 66, his wife, Kay, confirmed in a Facebook post on Saturday evening.
"I am sorry to make a very sad announcement. Today unfortunately my beloved husband Marvelous Marvin passed away unexpectedly at his home here in New Hampshire," Kay wrote on Marvelous Marvin Hagler Fan Club page. "Our family requests that you respect our privacy during this difficult time. With love, Kay G. Hagler."
The official cause of death has not been confirmed.
Hagler was the undisputed middleweight champion between 1980 and 1987, and was inducted into the International Boxing Hall of Fame in 1993.