A clash between two unbeaten boxers is scheduled to take place on Wednesday, May 6, with Aussie native Nikita Tszyu taking on Spanish fighter Oscar Diaz.

The two will clash inside the ring in Newcastle, New South Wales, at the Newcastle Entertainment Centre, with the fight card set to start at 14:00 AEDT.

Quick Picks

• Our pick: Tszyu to win
• Value bet: Tszyu to win by TKO/KO
• Long shot: Tszyu to win the fight inside 8 rounds

Tale of the Tape

The two fighters will compete in a super welterweight (154 lb) clash, with both having their undefeated records on the line. It will be a classic orthodox vs southpaw bout, with Tszyu the southpaw.

Tszyu is the sharper, more explosive puncher, with an 82% KO ratio and a tendency to overwhelm opponents once he finds his rhythm. Diaz is more of a grinder; he is durable, mobile, and technically tidy, but with a relatively modest 38% KO rate that suggests he's more about volume and balance than one-punch power.

Tszyu's figures are first…

• Age - 28 vs 25
• Height - 5'10" (177cm) vs 5'9" (177cm)
• Stance - Southpaw vs Orthodox
• Record - 11-0-0 vs 16-0-0
• KO Record - 9 vs 6

Betting Preview

How have they performed in their last five fights?

Tszyu's last five fights:

• Michael Zerafa - No Contest (Doc. Stoppage, 3) - Jan 2026
• Lulzim Ismaili - Win (TKO, 1) - Aug 2025
• Koen Mazoudier - Win (TKO, 9) - Aug 2024
• Danilo Creati - Win (UD, 10) - Apr 2024
• Dylan Biggs - Win (TKO, 5) - Nov 2023

Diaz's last five fights:

• Leonardo Di Stefano - Win (UD, 10) - Jan 2026
• Khalid Ennachat - Win (Points, 8) - Jun 2025
• Anderson Rangel - Win (Points, 6) - Nov 2024
• Ezequiel Gurria - Win (SD, 12) - Apr 2024
• Ezequiel Gurria - Win (TKO, 8) - Nov 2023

Betting Markets to Watch

Tszyu is the heavy favourite entering this fight, but it's possible to argue that the betting value isn't quite in the moneyline for this one.

It's perhaps worth taking a look at the value in the method of victory market for this one, with a TKO/KO victory likely. As noted, the Aussie has significant knockout power. He is also 3-0 when fighting at this venue, suggesting he has a command in this arena.

For additional value, Tszyu inside 8 rounds is the sharper version of the same bet because his fights tend to get decided once he starts landing cleanly.

Our Prediction

Check the latest Tszyu vs Diaz betting odds at Sportsbet.

We think it is likely that Tszyu wins this fight, with the value in the method of victory market. If you're new to boxing betting, understanding the different markets available can help you find the best value plays.

For more boxing predictions and the latest boxing betting odds, head to Sportsbet.