Yuki Yoza: Karate Background, K-1 Title and ONE Career

Yuki Yoza is a Japanese kickboxer whose career runs from elite Kyokushin karate to a K-1 lightweight championship and a title challenge in ONE Championship. His results against Taio Asahisa, Petchtanong Petchfergus and Superlek help explain his rise beyond Japan's domestic circuit.

This guide covers his background, the transition between promotions and the meaning of his different record totals. Results are checked through October 17, 2026; the fighter profile provides KickboxHub's documented bout-by-bout history.

Yuki Yoza at a glance

• Nationality: Japanese; from Tsuchiura, Ibaraki.
• Born: December 20, 1997; age 28 on October 31, 2026.
• Karate background: Kyokushin, including the 2017 world weight-category lightweight title.
• Kickboxing title: sixth K-1 WORLD GP lightweight champion.

These biographical and title details come from K-1's official athlete profile. Karate achievements belong to a different competitive record and should not be added to his professional kickboxing wins.

From karate to the K-1 lightweight title

Yoza began karate as a child and turned professional in kickboxing in 2019. ONE's biography describes seven wins in his first year, followed by a more difficult period before he rebuilt his career. Those early-career headline details do not establish a complete opponent-by-opponent list on their own.

His K-1 group debut came at Krush 132 on December 18, 2021, when he stopped Hikaru Hasumi in the second round. In February 2022, he defeated Taio Asahisa after an extension round. Their March 12, 2023 rematch at K'Festa 6 brought Yoza the K-1 lightweight championship.

The official K-1 result records that title win by unanimous decision. Subsequent victories included a first-round body-kick knockout of Aikmongkol Gaiyanghadao in July 2023 and a first-round knockout of Kongnapa Weerasakreck in July 2024.

His move to ONE Championship

Yoza's ONE career began in 2025. The promotion's athlete record lists four wins and two losses across six ONE bouts at this update. That is a promotional record, not his entire professional career.

Date	Opponent	Yoza's result	Official event source
May 23, 2025	Elbrus Osmanov	Won, unanimous decision	ONE Friday Fights 109
July 18, 2025	Petchtanong Petchfergus	Won, unanimous decision	ONE Friday Fights 116
November 16, 2025	Superlek	Won, unanimous decision	ONE 173
April 29, 2026	Jonathan Haggerty	Lost, unanimous decision over five rounds	ONE SAMURAI 1
July 17, 2026	Ben Woolliss	Won, unanimous decision	ONE Friday Fights 162 / The Inner Circle 22
October 17, 2026	Nabil Anane	Lost, unanimous decision	ONE SAMURAI 4

Jonathan Haggerty retained the bantamweight kickboxing championship in April. Yoza returned to the win column against Woolliss in July, before losing to Nabil Anane in October. Those are completed results; the April title challenge and July matchup are no longer upcoming fights.

Why his record totals differ

As of this review, KickboxHub documents 18 completed professional kickboxing bouts: 14 wins and four losses. That list is incomplete, particularly in Yoza's early career. It should not be presented as a complete career record.

K-1's profile displays a 22–3 career headline at the time checked, but its visible event list ends in 2024. ONE's 4–2 covers only ONE appearances. These figures have different coverage and update histories: adding them together would double-count career results, while treating either as KickboxHub's documented total would hide missing history.

Use the Yoza results profile for individual recorded bouts and our explanation of conflicting kickboxing records for the broader source problem.

Height, weight and division names

K-1 lists Yoza at 170 cm and 62.5 kg, its lightweight limit. These are K-1's published measurements; athlete listings can differ between sources and dates.

ONE's bantamweight division runs up to 145 lb, approximately 65.8 kg, under its official weight-class system. A K-1 lightweight and a ONE bantamweight therefore compete under different division names and limits. A division limit is not a claim about an athlete's weight outside competition.

What his finishes show about his style

Yoza's karate background is reflected in the variety of his kicks. K-1's career account describes a high-kick finish against Hasumi, while its Aikmongkol fight review describes a first-round crescent kick to the body. These are concrete examples of attacks at different heights, rather than evidence that every win comes from one signature technique.

His six ONE appearances also show why a style description should extend beyond knockouts: all four promotional wins came by unanimous decision. For the result of a particular fight, follow the linked official card or the documented history, rather than inferring its outcome from a highlight reel.