A World Champion defends her throne, a king chases a second crown, and the bantamweight Muay Thai division inches closer to sorting out its logjam at the top. ONE Fight Night 46 streams live from Lumpinee Stadium this Saturday, August 15, and here are three reasons this card demands your attention.

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#1 Hemetsberger Faces A Challenger Who Has Something To Prove

Two-sport ONE World Champion Stella "Always Hungry" Hemetsberger puts her ONE Women's Strawweight Muay Thai World Title on the line for the first time, and her opponent isn't just any contender.

Natalia "Karelian Lynx" Diachkova fell short in her own World Title bid two years ago, but she's spent every moment since rebuilding toward this exact opportunity.

The Russian star owns a 32-5 career record, including six wins in ONE Championship, and has dominated the competition. Most recently, she detonated a spectacular first-round finish to force this rematch chance.

They say you’re not a true World Champion until you defend your belt. On Saturday, Hemetsberger looks to prove her worth. She also has never faced a challenger with this much unfinished business on the line. For Diachkova, there's no scenario where a second defeat is acceptable. This is her big chance to prove the first setback was the exception, not the rule.

#2 Carrillo Begins His Hunt For Two-Sport Gold

Nico "King of the North" Carrillo has already conquered his division’s Muay Thai ranks, and now, the undisputed ONE Featherweight Muay Thai World Champion has set his sights on kickboxing glory.

The Scottish powerhouse brings a terrifying 86 percent finishing rate into unfamiliar territory, but his debut opponent, Chinese newcomer Zhou Jiaqiang, has every intention of crashing the party immediately.

Zhou may be new to the world’s largest martial arts organization, but he is widely regarded as a top-ranked super featherweight by some of kickboxing’s leading pundits, so he brings a huge reputation into the contest.

A statement win for Carrillo would signal that a second World Title chase is realistic, but a shocking upset would derail his two-sport ambitions before they truly begin.

#3 Leading Contenders Throw Down In Muay Thai & Kickboxing Divisions

Few divisions are as stacked at the top as bantamweight Muay Thai right now, featuring names like reigning kingpin Rambolek Chor Ajalaboon, No. 1 contender Yod-IQ Or Pimolsri, next challenger Suakim PongSuphan PK, former titleholder Nabil Anane, and knockout artist Abdulla Dayakaev.

That list also features Kiamran Nabati, a world-class fighter who is looking for redemption after Yod-IQ handed him his first career defeat in his last outing. He looks to get that from Nontachai Jitmuangnon, riding real momentum after beating former two-time ONE Bantamweight Muay Thai World Title challenger Felipe Lobo. Only one man walks away closer to the throne.

Elsewhere, former K-1 Champion Kana "Krusher Queen” Morimoto looks to snap a rough patch against Hong Kong’s Yu Yau Pui, who most recently knocked out Supergirl Jaroonsak in 75 seconds and retired the popular Thai superstar. If she can topple Morimoto, then she could be within striking distance of a shot at Phetjeeja Lukjaoporongtom’s ONE Women’s Atomweight Kickboxing World Title.