They included the former Rizin, Road FC and Jewels Atomweight champion Seo Hee Ham, the #1 ranked Denice Zamboanga, the #2 ranked Meng Bo, the former ONE Kickboxing and Muaythai Atomeweight champion Stamp Fairtex, as well as the non-ranked Ritu Phogat, Itsuki Hirata, Alyse Anderson and Alyona Rassohyna.

In the headline attraction, the reigning ONE Kickboxing Bantamweight Champion Alaverdi Ramazanov will defend his title for the first time against Capitan Petchyindee Academy.

However, Hexigetu pulled out a week before the event because his home province of Hebei, China, was put into lockdown following a recent COVID-19 spike.

[20] [21] Road to ONE: Young Guns was a Combat sport event held by ONE Championship in partnership with Shooto on February 22, 2021, at the Tsutaya O-East in Tokyo, Japan.

[25] Also on the card, ONE Flyweight Muay Thai World Champion Rodtang Jitmuangnon was set make his kickboxing debut against Alejandro Rivas.

The event was headlined by a bout between two promotional newcomers, the Iranian Amir Aliakbari has met the undefeated South Korean Kang Ji Won.

The co-main event also featured the promotional debut of Anatoly Malykhin against the former ONE Light Heavyweight World Title challenger Alexandre Machado.

[41] The reigning ONE Flyweight Muay Thai World Champion Rodtang Jitmuangnon was scheduled to fight Jacob Smith in a non-title bout.

[53] A heavyweight bout between Brazilian jiu-jitsu legend Marcus Almeida and Kang Ji Won was previously scheduled for ONE on TNT 2.

[56] Dustin Joynson was originally scheduled to headline the lead card against Islam Abasov,[57] but the Russian has withdrawn from the contest for undisclosed reasons.

[59] Jarred Brooks signed a contract with ONE Championship, and is expected to make his promotional debut against Lito Adiwang at this event.

[60] The fight was later postponed, as Adiwang tested positive for COVID-19, and was replaced by a flyweight bout between Kim Kyu Sung and Wang Shuo.

ONE Championship held a one night 4-man qualification tournament including Tomáš Hron, Mehmet Özer, Mohamed Amine and Cyril Cereyon.

The event was supposed to be headlined by a trilogy bout between the ONE Light Heavyweight Champion Aung La Nsang and the former ONE Middleweight title challenger Vitaly Bigdash.

[47] ONE CEO Chatri Sityodtong revealed that the former Bellator and UFC Lightweight Champion Eddie Alvarez would face the winner of Marat Gafurov versus Ok Rae-yoon.

A ONE Heavyweight Championship bout between the current champion Brandon Vera and contender Arjan Bhullar served as the event headliner.

[85] The #4 ranked women's strawweight Ayaka Miura faced promotional newcomer Rayane Bastos in a 58 kg catchweight bout.

The event was headlined by a bantamweight muay thai bout between Saemapetch Fairtex and the 2019 Lumpini Stadium 140 lbs champion Kulabdam Sor.Jor.Piek-U-Thai.

[88] A flyweight bout between the promotional newcomer[89] Kantharaj Shankar Agasa and the 7-fight ONE veteran Wei Xie was scheduled as the co-main event.

The event will be headlined by a catchweight Muay Thai bout between Mongkolpetch Petchyindee Academy and former ONE Flyweight Kickboxing title challenger Elias Mahmoudi.

The event will be headlined by a ONE Strawweight Muay Thai world title bout between Sam-A Gaiyanghadao and promotional newcomer Prajanchai P.K.Saenchaimuaythaigym.

[109] Saemapetch Fairtex was originally scheduled to square off against Tawanchai PK.Saenchai Muaythaigym, with the winner getting a shot at reigning ONE Bantamweight Muay Thai World Champion.

The Fairtex athlete had been in close contact with the cornerman, so he's been removed from ONE: BATTLEGROUND III due to Singapore's health and safety protocols.

ONE Women's Strawweight World Champion Xiong Jing Nan returned to the ring to defend her belt for the fifth time as faced Michelle Nicolini May 28.

[114] After her loss to Bi Nguyen at ONE Championship: Dangal, Ritu Phogat was removed from the Women's Atomweight Grand Prix.

[121] [122] Road to ONE: Sexyama Edition was a Combat sport event held by ONE Championship in partnership with Shooto on October 5, 2021, at the Tsutaya O-East in Tokyo, Japan.

Giorgio Petrosyan faced Superbon Banchamek to determine the inaugural ONE Featherweight Kickboxing Championship in the main event.

In the main event, Roman Kryklia was expected to defend the ONE Light Heavyweight Kickboxing World Championship against Murat Aygun.

[128] After Aygün withdrew due to injury, he was replaced by Iraj Azizpour and the main event was changed to a title fight for the inaugural ONE Heavyweight Kickboxing World Championship.

In the headline attraction, the reigning ONE Kickboxing Lightweight Champion Regian Eersel will defend his title for the fourth time against Islam Murtazaev.