LOS ANGELES (Sept. 18, 2026) — Golden Boy has bolstered its stacked roster with the signing of two exciting Latin American fighters poised to make noise in their respective divisions: Mexico City’s featherweight Gustavo “Dorado” Rivera Rio (16-1, 11 KOs) and undefeated lightweight Ibran “El Asesino” Retamozo (19-0, 14 KOs) of Barranquilla, Colombia.

“Signing with Golden Boy Promotions is a dream come true,” said Gustavo. “Boxing has been my life since I was a kid, and I always envisioned myself being part of this team. My nickname, ‘Dorado,’ has always carried a special connection to the word ‘Golden,’ and even my friends used to tell me that one day I belonged with Golden Boy. Today, that vision has become reality. I’m grateful for this opportunity and excited to build my legacy with Golden Boy Promotions.”

“I would like to thank Oscar De La Hoya, Eric Gomez, and my manager Michael Miller for giving me this grand opportunity to join Golden Boy’s stable of fighters,” said Ibran. “It has been a dream of mine ever since I started boxing to be with Golden Boy Promotions, “The Creme de la Creme,” or the best of the best when it comes to boxing promoters. Oscar is the ambassador to the latin community in boxing and I watched him ever since I was a little kid win many World Championships. I am just elated to join Golden Boy and have a long and prosperous career with them. All I asked for was an opportunity and I’ll do the rest.”

“Gustavo brings that relentless Mexican fighting spirit, and Ibran is an undefeated, dangerous lightweight who has already shown tremendous power,” said Chairman and CEO Oscar De La Hoya. “Both fighters have the talent and hunger to make serious noise in their divisions. Now it’s our job to do what Golden Boy does best: develop their skills, build their platforms and guide them toward world championships. Nobody fights with more heart than Mexican fighters, and nobody identifies and develops talent like Golden Boy.”

Mexico City’s rising prospect Gustavo Rivera Rio is ready to take his career to the next level under the Golden Boy Promotions banner. The featherweight enters this new chapter with a 16-1 record, including 11 victories by knockout. His lone professional defeat came in May 2024 against the experienced Alexander Espinoza. A fighter with 17 years of experience in the sport, Rivera Rio turned professional in March 2023 and captured the WBC Youth Silver Super Featherweight title in April 2025 with a unanimous decision victory over Mexico’s Leonardo Sanchez. Nicknamed “El Dorado” by one of his professors, Rivera Rio was introduced to boxing by his father, a die-hard fan of the sport. He went on to build an impressive amateur résumé, competing in more than 150 bouts and representing the Mexican National Team. Outside the ring, Rivera Rio has earned a reputation for being well-spoken and carrying himself with confidence and professionalism. Now backed by Golden Boy Promotions, “El Dorado” has his sights set on making an impact on boxing’s biggest stages.

Representing Barranquilla, Colombia, undefeated and hard-hitting lightweight Ibran Retamozo is looking to take the next step in his career and make his U.S. debut. Nicknamed “El Asesino,” or “The Killer,” because of his power, Retamozo has lived up to the moniker with a perfect 19-0 record, including 14 victories by knockout. While he proudly represents his Colombian roots, León, Mexico, has also become home for Retamozo, where he now lives, trains and fights. A Mexican citizen, Retamozo has built his life in the country and considers Mexico home. Under the guidance of Coach James Gogue and managed by Michael Miller, Retamozo continues to sharpen an aggressive, pressure-heavy style built around constantly moving forward and forcing opponents to fight at his pace. Combined with his knockout power, that relentless approach has made “El Asesino” an exciting prospect to watch. Now, Retamozo is ready to bring that pressure to a new audience and introduce himself to U.S. boxing fans.

Tahmir Smalls remained undefeated with an eight-round welterweight fight of undefeated welterweights the Red Owl Box Arena in Houston.

Smalls, 147.6 lbs of Philadelphia won by scores of 78-74 and 77-75 twice and is now 12-0. Martin, 147.2 of Atlanta is 10-1.

“My corner told me to keep popping my jab and to keep my hands up,” Smalls noted. “Martin caught me with a right hand or two but that was due to me dropping my left hand. I was picking it up at the end of the fight. I will go back to the gym and work on it.”

“This was my first eight-round fight,” said Smalls. “It was exactly what I expected. But there were a couple of things that I could tighten up on. He was a good opponent and he brought more than I thought but at the end of the day, I handled it the way I was supposed to.” 

Elijah Williams scored a controversial sixth round stoppage over Dion Jones in a eight-round super lightweight fight.

In round one, Jones dropped Williams with a short counter left hook. In round three, Williams was cut over the left eye.

In round six, Williams landed a hard right that hurt Jones. Jones was holding on, but the referee for some reason stopped that bout and the fight was halted at 1:58.

Williams, 145 lbs of Newburgh, NY is 10-1 with four knockouts. Jones, 139.8 lbs of Las Vegas is 7-1.

“I did what I had to do, he is a good fighter,” said Williams. “I got a little careless at times, especially early in the fight.”

“It’s up to the referee how the fight goes,” continued the 21-year-old Williams. “I was going for the kill so all he did was stop it a little early.” 

Joshafat Ortiz survived an opening round knockdown to eek out a six-round unanimous decision over Travis Crawford in a junior lightweight bout.

In round one, Crawford dropped Ortiz with a right uppercut.

Ortiz, 128.8 lbs of Reading, PA won by scores of 58-55 twice and 57-56 and is now 13-1. Crawford, 128.6 lbs of Corpus Christi, TX is 7-3.

“You have instant replay, you saw what happened,” said the 29-year-old Ortiz. “He stepped on my foot but not taking anything away from him.”

“No credit away from my opponent but everytime I come into this ring, I bet on myself and I knew what I could do tonight,” said Ortiz

Dash Simmons stopped Nosa Divine Nehikhare in round four of their six-round light heavyweight bout.

In round three, Simmons dropped Nehihhare with a left hook.

In round four, Simmons landed a left hook to the top of the head that put Nehikhare down again. when he got to his feet, the bout was waved off at 1:10.

Simmons, 182.2 lbs of Ashville, NC is 5-0 with five knockouts. Nehikhare, 181.6 lbs of Kaba, Nigeria is 5-3

“I just had to calm down,” said Simmons. “I competed at a high level in the amateurs and now I am getting back to that in the pros. My coaches told me to keep working my jab because this was the first time I faced a southpaw in the pros. Shout out to Red Owl for this opportunity.”

Steve Cunningham Jr. remained undefeated by winning a four-round majority decision over Rudy Reveles in a junior middleweight fight.

Cunningham, 156 lbs of Philadelphia won by scores of 39-37 twice and 38-38 and is now 3-0. Reveles, 154.6 lbs of Las Vegas is 1-1.

“I was definitely looking for the knockout but you can’t expect it all the time,” said Cunningham, Jr. “I had a really rough training camp but it’s different in the ring. I just have to get in the ring a little bit more and get the ring rust off – and I will be better. 

“Ever since I was in diapers, I was around high-level boxing,” continued Cunningham, Jr., the son of former two-time cruiserweight world champion Steve Cunningham. “It’s in my blood. It’s nothing you can train for. I feel great and I want to get right back in there. I want to show the world who I am.”

Gustavo Rivera Rio scored six-round unanimous decision over Joseph Cruz in a junior lightweight bout.

Rivera, 130 3/4 lbs of Houston won by scores of 60-54 on all cards and is now 11-1. Cruz, 129 1/2 lbs of Ciudad Obregon, MX is 9-11-1.

“I faced another tough Mexican just like me, I knew he wasn’t going to fall down so I had to put on my boxing skills tonight,” said Rio, who is trained by the renowned Ronnie Shields. “I was landing my left hook so I was told to repeat it and that’s what I did.”