Floyd Mayweather reacted after the demise of his Uncle, he said: "My uncle Roger Mayweather has lost a lot of memory from the sport of boxing". "Unfortunately, his health was failing him for several years and now he can finally rest in peace", Mayweather Jr said in a statement.
The Michigan-born Roger Mayweather held world featherweight and lightweight titles during the 1980s, before hanging up his gloves with 59 wins from 72 fights and turning his attentions to training.
Roger Mayweather also had his share of in-ring success.
Roger was a key member of Floyd's training team, training the 50-0 boxer when he made his pro debut in 1996 until his father, Floyd Senior, was released from prison two years later. It is a awful loss for all of us.
No cause of death has been confirmed.
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For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. Across the country, more than 2,500 people have contracted the disease, with the death toll reaching 51.
A man who then went on to become one of the great trainers in the entire sport.
"On top of being a phenomenal fighter in his own career, Roger was one of the most essential parts of guiding Floyd to the incredible career he had in becoming the best ever".
"We thank you all for the outpouring of love and support during this time".
Floyd Mayweather has been rocked by a second family tragedy in the space of a week. "Roger's spirit lives on with us forever".
Floyd responded by posting a series of photos of the couple on Instagram as a tribute to her.
Last week, Josie Harris, the mother of three of Mayweather's children, was found dead in her vehicle in front of her house in Valencia, California.