( CNN ) -- Boxing great Oscar De La Hoya says he 's back in rehab . It 's not the first stint in rehab for De La Hoya , 40 , who has previously spoken about problems with drug and alcohol abuse . The world-champion boxer announced he had entered treatment just days before Canelo Alvarez , who De La Hoya 's Golden Boy Promotions represents , is set to square off against Floyd Mayweather . `` Canelo Alvarez and I have big fights coming up this weekend . His is in the ring and mine in treatment , '' De La Hoya said in a written statement Tuesday . `` I will not be at the fight to cheer Canelo to victory since I have voluntarily admitted myself into a treatment facility . '' He said he had explained the situation to Alvarez . `` He understood that my health and longterm recovery from my disease must come first , '' De La Hoya said . `` Thank you for your understanding . I ask for your support and privacy during this difficult time for me and my family . '' CNN 's David Close contributed to this report .
Oscar De La Hoya announces he 's in rehab . `` I have voluntarily admitted myself into a treatment facility , '' he says . The boxer has previously admitted problems with drug and alcohol abuse .