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What is Boxer Marvelous Marvin Hagler’s Cause of Death?


Marvelous Marvin Hagler’s cause of death is not announced yet, but his death news is confirmed by his wife and Boxing Social Magazine.

The professional boxer, Marvelous Marvin Hagler passed away at the age of 66, reportedly due to “the after-effects of the vaccine.”

Marvelous Marvin Hagler was the second famous fighter to train out of Brockton, Massachusetts, after Rocky Marciano, who died suddenly at his home in New Hampshire.

According to a post made by Thomas Hearns on Instagram about an hour before his passing news, Hager was rushed to the ICU due to “the after-effects of the vaccine.”

Marvelous Marvin was a southpaw middleweight world champion. He has 62 wins, three losses, and two draws as a professional between 1973 and 1987 during his professional career.

After losing the world middleweight title on a 12 round split decision to Sugar Ray Leonard.

Hagler compiled a record of 62-3-2 from 1973 to 1987. Most boxing recorders consider Hagler to be one of the greatest fighters forever.

He is best identified as one of the “four kings” of boxing’s last great era, as George Kimball named him alongside:

Maybe Hagler will be best remembered and famed for his overhyped and bloody three-round fight with Thomas Hearns in April 1985.

The first round of their fight is considered the most action-packed to be seen in the middleweight analysis, even the best middleweight round ever.

Marvelous Marvin Hagler’s Death Cause Seems to be Vaccine

Thomas Hearns announced that Marvelous was in ICU fighting the after-effects of the vaccine. But it didn’t take a long time when his death news was revealed.

The legend was also the half-brother of middleweight Robbie Simms, who also beat Roberto Duran like his brother Marvin.

He lost his two world title chances to 1985 WBA Middleweight champion Sumbu Kalambay and 1986 WBO Middleweight champion Doug DeWitt.

Simms had a record of 38 wins, 10 losses, and two draws between 1980 and 1996. Hagler paralleled Marciano in only one regard besides Brockton: both Hagler and Marciano retired at age 32 while on top, their faculties intact.

Our thoughts and prayers are with Hagler’s family. His family needs privacy; please respect them during this difficult time.

For tributes and prayers, kindly scroll down and use the comment box to share your feelings about the heartbreaking news.

Marvelous Marvin Hagler Professional Career

The pro boxer still scores high in boxing circles among well-known athletes as one of the most consistent boxers at 160 pounds and his marvelous chin, which was never scratched.

Professional boxer Hagler suddenly passed away at 66

He had many good years left before his retirement after losing the WBC Version, but Marvelous just walked away from the boxing and the United States as well.

The professional boxer had a record of 13-1-1 in world title bouts at 160 pounds. Marvin held the middleweight title for six years and four months, coming in the era after Carlos Monzon.

BoxRec rates him the number six middleweight, behind:

  • Sugar Ray Robinson
  • Harry Greb
  • Carlos Monzon
  • Dick Tiger
  • and Mickey Walker

Hagler disappeared from a boxing point of view, forgotten to obscurity by his own choosing. Marvelous still had strong boxing promise.

One can only assume Hagler lost his ‘Eye of The Tiger’ and his taste for the tournament after losing to Leonard and gave up the sport.

Hagler starred in action films in Italy and provided commentary for boxing on British television in retirement. He married his Italian wife in 2000 after his divorce with five children.

Recently, the actor Cliff Simon’s cause of death was reported as a Kiteboarding accident on Thursday, March 9.

The actor had reached a national level in South Africa in swimming and gymnastics, but to go more in either one, he needed to give all of his time to just one, and he chose swimming.

Reactions to Death of Marvelous Marvin Hagler

Celebrities’ death news always break many hearts, however, fans remember memories and their idols are alive in their mind even after death.

Soon after the passing of box legend, Marvelous Marvin Hagler, his friends and fans expressed their sadness by sharing their tributes on social media.

Wife Kay G. Hagler confirmed the heartbreaking news on Facebook on the Marvelous Marvin Hagler Fan Club page.

“I am sorry to make a very sad announcement,” she said.

Adding, “Today unfortunately my beloved husband Marvelous Marvin passed away unexpectedly at his home here in New Hampshire. Our family requests that you respect our privacy during this difficult time.”

A user tweeted: “Sad to hear we lost #MarvelousMarvin Hagler today at a too young 66. It’s not the best picture, but I snapped this photo of the New England favorite son #MarvinHagler during the #BristolRI 4th of July parade back in 1982 !”

Another wrote: “Thank you Marvelous Marvin, enjoyed watching you whilst growing up. One of the originals that first reeled me into watching boxing. Rest piece big guy.”

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  1. Jarrett w Smith March 13, 2021

    Why do all you moron reporters keep mentioning his last fight with sugar ray which was his most disrespected and biggest robbery of his career. Bringing that fight into his death is disgusting and we would be ashamed of everyone one of you for tarnishing his legacy. You should be sick to you stomach of how your portraying his last moments in life i know i sure I’m!

    1. USdayNEWS March 14, 2021

      We cover all the legends’ life and career details to share a complete article with our users. We write both honors and misfortune without any direction. Thanks for your interaction anyway.

  2. oliver williams March 13, 2021

    Headline states “What is Boxer Marvelous Marvin Hagler’s Cause of Death?”

    Article state not confirmed so why bother writing it?

    1. USdayNEWS March 13, 2021

      You’re right; we could not provide Hagler’s exact cause of death or confirm rumors at this time; although we are working to find further information and provide the latest update, stay up with us.

    2. Anonymous March 14, 2021

      I hate that too….soooo annoying…and what? If it wasn’t a heart attack or something similar, they must know that it was some disease he had, so what’s up with that? And where was he when it happened and what was he doing? Why the mystery?

      1. USdayNEWS March 14, 2021

        As far as we know, his friend, Thomas Hearns, announced that Marvelous was rushed to the ICU, but his wife announced that he passed away at his home in New Hampshire. No one didn’t confirm any disease or even heart attack, but “the after-effects of the vaccine.”


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