(April 8th) No Limit Boxing Promotions is set to ignite the Newcastle Entertainment Centre on Wednesday, May 6, 2026, as the Tszyu legacy returns to the ring.

Headlining the night is unbeaten super welterweight Nikita “The Butcher” Tszyu (11‑0, 9 KOs), who will face undefeated Spanish contender Oscar “El Toro” Diaz (16‑0) for the WBO International Super Welterweight Title in a pivotal 10-round clash at 154 lbs.

Tszyu, the son of boxing legend Kostya Tszyu and younger brother of former world champion Tim Tszyu, brings a career marked by pressure, devastating body work, and knockout power. Newcastle has long been a stronghold for the Tszyu family, who collectively hold a 13‑0 record in the city, and Nikita has previously captured the Australian title there with a rallying KO over Dylan Biggs. However, momentum stalled earlier this year when his January contest with Michael Zerafa ended in a controversial no-contest due to an accidental clash of heads, leaving fans and the fighter himself eager for redemption.

Diaz, ranked #15 by the WBO, steps into unfamiliar territory for his first fight outside Spain. The Andalusian contender is technically sharp and durable, boasting 16 consecutive wins but a modest knockout rate, making this a true test of endurance and international caliber against a homegrown world-ranked rival. A victory for either fighter carries tangible implications: Tszyu aims to cement his place among the super welterweight elite and set up a potential world title eliminator, while Diaz seeks to establish himself on the global stage.

No Limit Boxing has assembled an undercard rich with talent and stakes. Jack Bowen faces Tonga Tongotongo for the WBO Asia Pacific Super Middleweight Title in a clash that could define regional rankings. Australian Olympian Callum Peters returns at middleweight, showcasing his disciplined technique against an opponent to be named. Rahim “CJ” Mundine, continuing the legacy of the famed Mundine family, takes on Lance McDonald in a test of skill and maturity. The card also features rising local prospects Brandon Grach, Brent Walton, Wayne Telepe, Kyron Dryden and lightweight duo Jayden Vasica vs. Benjamin Amos, all adding depth, drama, and future storylines to the event.

“This return is about redemption and focus,” said Tszyu. “Newcastle has always been special for our family — the crowd, the energy, the atmosphere — it feels like home. I can’t wait to get back in that ring.”

Fans can expect high-output action, technical matchups, and the signature Newcastle crowd energy that has defined the Tszyu legacy. Preliminaries begin at 5:00 PM AEST, with the main event slated for approximately 10:00 PM AEST. The night will be broadcast live on MAIN EVENT and Kayo Sports in Australia, with international broadcast details forthcoming. 

Venue: Newcastle Entertainment Centre, Newcastle, New South Wales, Australia

Event Name: Tszyucastle

Promoter: Trent, George & Matt Rose -  No Limit Boxing Promotions

Matchmaker: Trent Rose, Matt Rose

Media: Australia Kayo Sports , Australia FOX, Australia Main Event

For tickets to Tszyu vs Diaz just (click here).

No Limit Boxing’s “Tszyucastle” is more than a fight night — it is the next chapter in one of Australian boxing’s most storied dynasties, showcasing redemption, legacy, and the relentless drive of Nikita Tszyu as he stakes his claim in the super welterweight division.

No Limit Boxing

No Limit was first established in 2013 with a number of promotions in regional NSW. Matt had a vision to make boxing a tier one sport in the country and always believed No Limit would become a boxing/sport powerhouse. Together with a great team No Limit has grown to be just that and is now recognised as the number one boxing promotions company in Australia.

No Limit Boxing has the promotional rights to Australia’s most exciting boxing prospects and has secured a long term broadcast rights deal with Fox Sports Australia. No Limit Boxing will showcase 11 events per year on KAYO and Main Event PPV, boasting the best talent in the country, high quality bouts and exceptional entertainment.

There is no show like a No Limit show. We are proud to hold the record for the highest rated Fox Sports boxing event in the history of the sport and the journey is only just beginning, come with us!