Roger Mayweather, who was a world champion boxer in two weight classes died on Tuesday in Las Vegas, he was 58.

He became popular as the trainer of his nephew Floyd Mayweather Jr.

Floyd Mayweather announced the death in a statement.

He did not specify the cause, but said his uncle’s “health was failing him for several years.”

Roger Mayweather had a number of long-term health problems, including diabetes.

According to CNN International, he won the World Boxing Association junior lightweight title in 1983 with an eighth-round knockout of Samuel Serrano; in 1987, he earned the World Boxing Council junior welterweight title with a sixth-round knockout of René Arredondo.

Roger Mayweather was once suspended for a year and fined $200,000 by the Nevada State Athletic Commission after an incident during a junior welterweight title fight between Floyd Mayweather and Zab Judah in 2006.

When Judah fouled Mayweather hard twice near the end of the 10th round, Roger Mayweather entered the ring and got into a scuffle with Zab’s father and trainer, Yoel Judah.

Roger Mayweather was born on April 24, 1961, in Grand Rapids, Mich. He made his pro boxing debut in 1981 with a first-round technical knockout of Andrew Ruiz after going 64-4 as an amateur.