Boxing sensation Nikita Tszyu delivered a commanding performance Wednesday evening in Newcastle, Australia, stopping the previously undefeated Spaniard Oscar Diaz. This flawless display has further solidified Tszyu's claim for a potential world title eliminator opportunity in the near future. The son of Hall of Famer Kostya Tszyu, Nikita was determined to make a strong statement following his recent no-contest against Michael Zerafa in January, and he emphatically succeeded at the Newcastle Entertainment Centre.

Tszyu, ranked sixth by the IBF at 154 pounds, dominated Diaz (16-1, 6 KOs) for six highly entertaining rounds. From the outset, the step up in class was evident for Diaz, who had never faced a ranked opponent or fought outside his native Spain. Tszyu systematically worked over Diaz, initially with shots to the head before switching to his signature vicious body attacks. His lightning footwork, precision, and power proved insurmountable for Diaz, who had no answer for the Australian's relentless pressure.

The Australian landed a heavy left-hand shot to the jaw, sending Diaz to the canvas in the second round. Tszyu came close to securing a stoppage in the fifth round, unleashing a flurry of early punches that forced Diaz to retreat and duck for cover on the ropes. The final punishment came as a series of head-body combination attacks to close the sixth round. However, the end of the round was marred by controversy when two of Tszyu's punches landed after Diaz had taken a knee from a heavy body blow. Tszyu immediately apologized, explaining, "It was just a split second reaction. I didn't see his knees were on the ground. I thought he was bent over. In my experience, if they are bent over, keep punching." Despite the apology, Diaz's corner was left irate and accused Tszyu of foul play.

The victory over Diaz improves Nikita Tszyu's professional record to an unbeaten 12-0 with 10 KOs and maintains his family's perfect 14-0 record in "Tszyu-castle." This latest feat is expected to significantly boost his chances for a world title eliminator shot. Speculation has also been rife regarding potential big-money fights against American stars such as Jaron Ennis, Keith Thurman, and Tony Harrison, the latter of whom his brother Tim defeated in March 2023 to claim the WBO junior middleweight title. Despite the excitement, Tszyu's long-time manager, Glen Jennings, cautioned that his protégé is still "50, 60 rounds" away from a world title shot, stating, "He's still a young man who has a lot to offer."

The evening also featured a compelling undercard. The co-main event saw Callum Peters (7-0), hailed as arguably the nation's most promising young fighter, secure a one-sided unanimous points victory over experienced American Joeshon James (10-2-2). The judges scored the super-middleweight bout 100-89, 100-89, 99-90, reflecting Peters' dominance and his potential to headline future major No Limit Boxing cards.

Further down the card, Western Australia's rising light heavyweight Kirra Ruston (9-0) achieved a third-round stoppage against Turkey's Berkay Varol (9-1). Brisbane's Jack Bowen (13-1) claimed the WBO oriental super middleweight title by obliterating Tonga Tongotongo (11-2) with a relentless second-round attack. Rahim Mundine (3-0), son of Australian boxing icon Anthony Mundine, won his first No Limit Boxing contest against Lance McDonald (1-5-1), although the crowd vocally disagreed with the lopsided scorecards. Local favorite Kyron Dryden (14-2) ended a seven-year hiatus with a second-round stoppage of Hunter Ioane (10-14-1), and Brent Walton (5-2) secured a narrow majority points decision against Jayden Vasica (1-2). Other winners included Brandon Grach (5-1) and Wayne Telepe (4-2).