Bradley vs Rios to be officially announced today in Los Angeles

Timothy Bradley Jr and Brandon Rios will officially announce their November 7 HBO main event, and Vasyl Lomachenko will announce his next opponent for the same date at today's press conference in Los Angeles, which can be streamed live at Top Rank TV.

Bradley (32-1-1, 12 KO) may or may not be defending the WBO welterweight title that he won on June 27 against Jessie Vargas -- well, he won the interim title and was later bumped to full titleholder when the WBO stripped Floyd Mayweather -- but the fight is going ahead either way. The issue right now is that Sadam Ali is the WBO's mandatory challenger, and the sanctioning body needs the green light from Ali and Golden Boy Promotions to allow this fight to take place as an optional defense.

Rios (33-2-1, 24 KO) last fought on January 24, obliterating old rival Mike Alvarado in what turned out to be something of a feeble end to their trilogy.

Bradley vs Rios will be held at the Thomas & Mack Center in Las Vegas.