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          Follow live: Nikita Tszyu, Oscar Diaz headline fight night in Newcastle

          • Jake MichaelsMay 6, 2026, 04:28 AM ET
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              Jake Michaels is a Senior Writer who has been with ESPN for 13 years. He writes on a range of sports and events in Australia and around the world, covering everything from Aussie Rules to Grand Slam tennis, Formula One to boxing, athletics, swimming, and the Olympic Games.
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          NEWCASTLE, Australia -- Nikita Tszyu makes his return to the ring Wednesday evening where he will fight unbeaten Spaniard Oscar Diaz, his first bout since a controversial no-contest against Michael Zerafa in January.

          Diaz (16-0, 6 KOs) is the first world-ranked opponent Tszyu (11-0, 9 KOs) has faced in his career, and victory for the 28-year-old Australian would continue his ascension toward a potential world title eliminator later in the year. Big name, big money fights against the likes of Keith Thurman and Tony Harrison have also been rumoured in recent weeks.

          "It was a crazy night back in January [against Zerafa], but I've moved on and now I'm ready to take on Diaz and anyone else they put in my path" Tszyu said. "Diaz is an undefeated fighter who is coming all the way over here to knock me out. I know the challenge that's in front of me but that's what excites me the most."

          Prior to the no-contest against Zerafa, Tszyu had scored an impressive first-round stoppage of Lulzim Ismaili and finished Koen Mazoudier to capture the IBF Australasian and WBO Intercontinental super-welterweight titles.

          Diaz enters this evening's fight in a similar vein of form, having most recently scored a decision win over Leonardo Di Stefano to claim the WBC Latino title earlier this year.

          How to watch Nikita Tszyu vs. Oscar Diaz:

          The Tszyu-Diaz fight night can be watched in Australia on Main Event via Foxtel as a pay-per-view. The event is also available through Kayo Sports as a pay-per-view purchase.

          Full undercard and fight prelim results for Nikita Tszyu vs. Oscar Diaz:

          • Nikita Tszyu (11-0) vs. Oscar Diaz (16-0) for WBO international super welterweight title

          • Callum Peters (6-0) vs. Joeshon James (10-1-2)

          • Kirra Ruston (8-0) vs. Berkay Varol (9-0)

          • Jack Bowen (12-1) vs. Tonga Tongotongo (11-1)

          • Rahim Mundine (2-0) vs. Lance McDonald (1-4-1)

          • Brent Walton (4-2) vs. Jayden Vasica (1-1)

          • Kyron Dryden (14-2) def. Hunter Ioane (10-14-1) by second round TKO

          • Brandon Grach (5-1) def. Caleb Tialu (3-7) by third round TKO

          • Wayne Telepe (4-2) def. Benjamin Amos (3-2) by majority decision

          Follow all of the action from the Newcastle Entertainment Centre with ESPN's live blog: