Johnny Tapia, the five-time boxing champion whose turbulent career was marked by cocaine addiction, alcohol, depression and run-ins with the law, was found dead on Sunday at his Albuquerque home. He was 45.

Authorities were called to the house at about 7:45 p.m. on Sunday, spokesman Robert Gibbs said. The death didn’t appear to be suspicious, he said.

Tapia won five championships in three weight classes, winning the WBA bantamweight title, the IBF and WBO junior bantamweight titles and the IBF featherweight belt.

He was regarded as the consummate underdog by his fans. The more trouble he found outside the ring – including several stints in jail – the more they rallied around him.

In a 1990s-era feud with fellow Albuquerque boxer and former world champion Danny Romero, Tapia’s fans anointed him with the slang Spanish title of “Burque’s Best.”