Golden Boy promotions president Oscar De La Hoya has reportedly admitted himself into a rehab facility in a bid to battle his alcohol and substance addiction.
It is believed that the retired boxer will be unable to attend the bout between Floyd Mayweather and Canelo Alvarez in Las Vegas this weekend.
"Our first thoughts are to wish Oscar well but obviously the show must go on," the Daily Mail quotes Golden Boy chief executive Richard Schafer as saying.
"He had been doing so well and the first thing is for him to work through it again and come back all the stronger. I'm sure he can do that, he is a strong-willed guy."
The 40-year-old is said to have relapsed following a tour promoting the highly anticipated fight.