Arnold Barboza Jr. vs. Kenneth Sims Jr. Boxing Card Announced

Golden Boy Promotions hosts a stacked fight card on Saturday in Anaheim, California.

Mar. 13, 2026 at 10:33pm

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Golden Boy Promotions is hosting a boxing card on Saturday, March 14 in Anaheim, California, headlined by a welterweight bout between former WBO Interim Lightweight Champion Arnold Barboza Jr. and Kenneth Sims Jr. The card also features two title fights - Oscar Collazo defending his WBO Strawweight title against Jesus Haro, and Gabriela Fundora putting her Undisputed Women's Flyweight titles on the line against Viviana Ruiz Corredor.

Why it matters

This card features several high-profile fighters looking to make their mark in the sport of boxing. Barboza is looking to bounce back from his first career loss, while Fundora has quickly become one of the best women's boxers in the world. The title fights add extra intrigue and significance to the event.

The details

Barboza, ranked as the eighth-best welterweight prospect on BoxRec, suffered his first career loss against Teofimo Lopez in May 2025. He'll look to get back on track against Sims, who is coming off a loss of his own. In the co-main event, Collazo will make the seventh defense of his WBO Strawweight title against Haro. And in the other title fight, the 23-year-old Fundora will put her Undisputed Women's Flyweight titles on the line against Corredor.

  • The event begins at 8:00 p.m. ET on Saturday, March 14, 2026.
  • The ringwalks for the main event between Barboza and Sims are expected to begin at 11:15 p.m. ET.

The players

Arnold Barboza Jr.

A former WBO Interim Lightweight Champion looking to bounce back from his first career loss against Teofimo Lopez.

Kenneth Sims Jr.

Barboza's opponent, coming off a loss of his own against Oscar Duarte in August 2025.

Oscar Collazo

The reigning WBO Strawweight Champion, making the seventh defense of his title.

Gabriela Fundora

The 23-year-old Undisputed Women's Flyweight Champion, defending her titles against Viviana Ruiz Corredor.

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What’s next

The judges' decision in the Barboza vs. Sims main event will determine if Barboza can get back on track after his first career loss.

The takeaway

This stacked Golden Boy Promotions card in Anaheim showcases some of the top talent in boxing, including rising stars like Barboza and Fundora looking to solidify their place among the sport's elite.