Boxing's only undisputed world champion CECILIA BRAEKHUS, will defend  her World Female Welterweight crown against former WBC Female World Middleweight Champion KALI REIS in the co-feature of the Gennady "GGG" Golovkin vs. Vanes "The Nightmare" Martirosyan World Middleweight Championship event.  Both world title bouts, featuring the No. 1 male and female pound for pound fighters in Golovkin and Braekhus, respectively, will be televised live on Cinco De Mayo, Saturday, May 5, from StubHub Center on HBO World Championship Boxing, beginning at 11:00 p.m. ET/PT.  This marks the first time a women's bout has been televised live on HBO.

Braekhus (32-0, 9 KOs), a native of Cartagena, Colombia, who fights out of Bergen, Norway,  is now trained by former world champion Lucia Rijker.  Braekhus will be looking to extend her nine-year world championship reign with her 22nd consecutive title defense, against Reis (13-6-1, 4 KOs), from Providence, RI, in a 10-round championship bout between two of the most dominant female fighters .    

The non-televised all-action undercard will feature undefeated consensus Top-10 world rated contender RYAN "Blue Chip" MARTIN. ; Martin (21-0, 12 KOs), from Chattanooga and fighting out of Cleveland, returns to Southern California for the second  time this year, taking on battle-tested BREIDIS PRESCOTT (31-12, 22 KOs), a native of Colombia who fights out of Miami, Fla., in a 10-round super lightweight bout.  The undercard will also feature five-time New York Golden Gloves champion and 2017 United States Amateur champion BRIAN CEBALLO (1-0, 1 KO), from Brooklyn, making his triumphant return to Southern California where he made his professional debut last month.  He will be in a four-round welterweight bout.

"From top to bottom this is a card worthy of Cinco De Mayo and the knowledgeable fight fans who regularly pack StubHub Center," said promoter Tom Loeffler.  "I am so proud to help present the first female bout to be televised live on HBO.  Undefeated World Female Welterweight Champion Cecllia Braekhus, boxing's only undisputed world champion, will have her hands full against former WBC World Female Middleweight champion Kali Reis, and Top-10 lightweight contender Ryan Martin will be taking on rugged Breidis Prescott.  Together with the Golovkin - Martirosyan middleweight title fight, is it any wonder that everyone is referring to May 5 at StubHub Center as boxing's Cinco De Mayo headquarters?"      

"I'm honored to fight on the same card as the best male fighter in the world, Gennady 'GGG' Golovkin, at the StubHub Center on May 5," said Braekhus.  "I've heard so many magnificent things about fighting in Southern California and the passion boxing fans have for great fights.  Cinco De Mayo at the StubHub Center will truly be a special night for the boxers and the fans.  I've been training in Los Angeles for the last six weeks with Lucia Rikjer, and this has been a tremendous camp particularly since I am able to work in the beautiful weather out here.  I've not fought in America in ten years and this is truly one of the high points in my career and I want to thank my fans all over the world for continuing to push me to great heights.  I know how tough Kali Reis is, and I'm ensuring every step in camp will prepare me for victory."

"It's been great working with Cecilia, she is so talented, and even more, so very dedicated to working hard and continuing to learn every day," said Rijker.  "We can't wait to show boxing fans at the StubHub Center and those watching all over the world what we've been working on."

"I am very excited for this opportunity.  I'd like to thank Cecilia and her team for this once in a lifetime chance to fight the No. 1 pound for pound undisputed champion," said Reis.  "My team and I have been hard at work knowing she will bring her A game, so will we.  This is such a great card and I am grateful to be a part of it."

"I’m excited to showcase my skills again to the LA fans.  I’m in really good shape and my weight feels great.  This is going to be a special night of boxing," said Martin.

"I am going deliver the same welcome gift to Martin that I gave to Amir Khan, a two-fisted sleeping tablet," said Prescott. 

Braekhus, 36, made her professional debut in 2007, and in only her 11th fight, two years later, captured the vacant WBC and WBA world female welterweight titles, winning a unanimous decision over undefeated contender Vinni Skovgaard  in 2009.  After two title defenses she added the vacant WBO title to her collection, winning a unanimous decision over Victoria Cisneros in 2010.  In 2014, she won a unanimous decision over IBF world champion Ivana Habazin to become undisputed champion.  She has reigned supreme over the welterweight division for four years and six title defenses.  Due to her lobbying and popularity, the Norwegian government lifted its 33-year ban on professional boxing allowing her to defend her world championship crown four times in front of massive crowds in her homeland while becoming a national hero.  On May 11, Braekhus will receive the Christy Martin Award as the Female Fighter of the Year at the annual Boxing Writers Association of America Awards Dinner in New York.    

Reis, 31, will be making her 2018 and West Coast debut when she challenges Braekhus.  After winning IBA and UBF titles, Reis, traveled to New Zealand in 2016 and won a split decision over Maricela Cornejo to capture the vacant WBC World Female Middleweight Title.  It was the first time New Zealand had ever hosted a major world championship fight.  Reis enters this fight having won six of her last seven fights, the only blemish, a decision title unification loss to undefeated WBO World Female Middleweight Champion Christina Hammer.  Reis is promoted by Joe DeGuardia's Star Boxing.

Martin, 25, returns to the ring after making a star turn headlining his first card, on March 27, at The Avalon in Hollywood, Calif.  Martin blasted Luis Eduardo Florez in the fourth round of their 10-round bout.  The Abel Sanchez-trained contender who regularly works out with Golovkin in Big Bear Lake, has a resume that boasts WBC Continental Americas lightweight title victories over Cesar Villarraga and Bryant Cruz as well as a WBA Intercontinental lightweight championship victory over Francisco Rojo despite suffering a fracture to his right hand.  Martin is currently world-rated No. 6 by the IBF, No. 8 by the WBC and the WBO.     .

Prescott, 34, will be the most experienced opponent Martin has faced.  Best known for his first-round knockout victory of Amir Khan and a decision victory over former world champion Richar Abril, Prescott has been in tough for much of his professional career, going the distance against former two-division world champion Terence Crawford and top-rated contenders Roberto Garcia, Paul McCloskey and Fredrick Lawson.  Boasting a victory by knockout ratio of 71%, Prescott will be looking to make the most of his Cinco De Mayo rumble with Martin.

Promoted by GGG promotions, in association with Don King Productions, and sponsored by Tecate, Chivas Regal, Jordan and Hublot, remaining tickets to the Golovkin vs. Martirosyan world championship event are priced at $750, $500, $300, $200, $100 (sold out) and $50 (sold out), and may be purchased online at , by phone at (888) 9AXS-TIX, or by visiting the StubHub Center box office.