evidence: "Marvelous" Marvin Hagler’s sudden death over the weekend had nothing to do with the COVID-19 vaccine, the wife of the late boxing legend clarified. Kay Hagler slapped down speculation that Hagler, 66, died after receiving the jab. "I do NOT accept to read some stupid comment without knowing really what happen," she wrote in a post on the Marvelous Marvin Hagler Fan Club page on Facebook. "For sure wasn’t the vaccine that caused his death. My baby left in peace with his usually smile and now is not the time to talk nonsense."