Floyd Mayweather has been rocked by a second family tragedy in the space of a week.
Roger Mayweather, trainer to nephew and champion boxer Floyd, has died at 58.
Mayweather Promotions revealed news of the American's death on Tuesday night with a tweet that read: “We are saddened with the recent news of Roger Mayweather's passing.
“Our hearts go out to the Mayweather family and we will keep you in our thoughts and prayers.
“We thank you all for the outpouring of love and support during this time. Roger's spirit lives on with us forever.”
Before becoming a legendary cornerman, the Grand Rapids, Michigan native was a champion in his own right.
“The Black Mamba” held the WBA and lineal super featherweight titles in the mid-1980s and the WBC light welterweight title later that same decade.
He held the IBO light welterweight title and IBO welterweight titles in the mid-1990s and finished with a 59-13 professional record.
He first began working with Floyd in the late 1990s and over 12 years helped shape him into one of the best pound-for-pound boxers of all time, amassing an unblemished 50-0 record.
No cause of death has been released.
Floyd Mayweather rocked by second recent tragedy
The loss of Roger is the second major blow to Floyd this month.
Last week his ex-girlfriend and the mother of three of his children, Josie Harris, was found dead inside a car in her driveway in Valencia, California.
Floyd responded by posting a series of photos of the couple on Instagram as a tribute to her.
With Yahoo Sports Staff