Nong-O Gaiyanghadao

Nong-O Gaiyanghadao (born November 10, 1986), formerly known as Nong-O Sit Or and Nong-O Gaiyanghadaogym, and now known as Nong-O Hama MuayThai or simply known as Nong-O Hama, is a Muay Thai fighter currently signed to ONE Championship and is the former and inaugural ONE Bantamweight Muay Thai World Champion.

As of January 16, 2024, he is ranked #2 and #3 respectively in the ONE Bantamweight Muay Thai and Kickboxing rankings.

On August 3, 2008, Nong-O fought against Kōji Okuyama at Keio Plaza hotel in Hachiōji, Tokyo, and he won by KO with left elbow strike during 3rd round.

December 9, 2008, he fought against Wutidet Lukprabath at Lumpinee Stadium in the memorial event of Lumpinee Stadium establishment.

He won by decision after five rounds.

On January 18, 2009, Nong-O fought against Tomoaki Suehiro at Yoyogi National Gymnasium for the Muay Thai event Muay Lok.

He won by TKO when the referee stopped the contest after he knocked Suehiro down twice with a right hook and left hook during first round.

After the contest, he was given a bunch of flowers by Shinya Aoki.

Nong-O was going to fight against Shunta Itō in the beginning, but he was replaced because his legs had not healed enough.

On November 8, 2009, he fought against Trijak Sitjomtrai in Japan.

Trijak was the current champion at featherweight sanctioned by the Professional Boxing Association of Thailand, but Nong-O won by majority decision (2-0) after five rounds.

On December 8, Nong-O fought against Petboonchu F.A. Group for his Lumpinee Stadium title at Super featherweight (130 lbs).

Nong-O won by decision and became the new champion.

On January 17, 2010, Nong-O participated in the tournament Yod Muay Champions Cup 60kg in Japan.

He fought against Singdam Kiatmoo9 in the first match.

After five rounds, the bout was declared a draw.

Nong-O lost by the split decision after extra round (6th round).

On December 9, he challenged Saenchai's titles of Lumpinee Stadium and WMC, but he lost by decision.

On January 19, 2011, Nong-O Sit Or was named 2010 Boxer of the Year at the Society of Friends of Sportswriters Awards Night in Bangkok.

Nong-O started the year with a win over Singdam in February and followed it up the following month with another win over F16 Rajanon.

He then lost a very close fight to Singdam in May, which many thought Nong-O had done enough to win, but beat Petboonchu FA Group in June.

On 31 July he fought Singdam in the main event at Lumpinee Stadium and was defeated by unanimous decision.

He faced Petboonchu F.A. Group for the seventh time on October 12, 2012 at Rajadamnern Stadium.

He TKO'd Mongkolchai Phetsupaphan in five on February 7, 2013.

He beat Singdam Kiatmuu9 on points to win the Lumpinee lightweight belt on June 7, 2013.

After taking a hiatus from Muay Thai in 2015, he became a Muay Thai instructor at Evolve MMA in Singapore until he left the gym in September 2022.

He would then make his comeback at ONE Championship: Heroes of Honor on April 20, 2018.

He is a seven-division Muay Thai champion, having won 2 Thailand titles, 1 Rajadamnern Stadium title, 3 Lumpinee Stadium titles, and 1 ONE Championship title.

Following a competitive hiatus in which he moved to Singapore to coach at Evolve, Nong-O returned in 2018 when ONE Championship unveiled their new striking format: the ONE Super Series.

Nong-O debuted on April 20 at ONE Championship: Heroes of Honor and defeated Fabio Pinca via unanimous decision.

He returned to his Thai homeland in October at ONE Championship: Kingdom of Heroes, and defeated Mehdi Zatout via unanimous decision.

On February 16, 2019, Nong-O defeated Han Zihao by unanimous decision to become the inaugural ONE Bantamweight Muay Thai World Champion at ONE Championship: Clash of Legends in Bangkok.

On May 10, 2019, he would defend his ONE Bantamweight Muay Thai World Championship against Hiroaki Suzuki at ONE Championship: Warriors of Light, winning by unanimous decision and retaining his title.

He made his second title defense against Brice Delval at ONE Championship: Immortal Triumph in Ho Chi Minh City on September 6, 2019, featuring ONE Championship's first event in Vietnam and first all-striking card, where he successfully retained the ONE Bantamweight Muay Thai World Championship via a closely contested split decision win.

Nong-O successfully defended his ONE Bantamweight Muay Thai World Championship against Saemapetch Fairtex, winning by fourth-round knockout in a fight where he knocked down Saemapetch twice in the second round.

As of December 2020 he is the number 6 pound-for-pound fighter in the world according to The Nation.

Nong-O Sit Or (น้องโอ๋ ศิษย์ อ.) was born as Apichet Khotanan in Sakon Nakhon Province in the Northeastern (Isan) region of Thailand.

He had his first fight at the age of 9.

He became interested in Muay Thai when he saw one of his neighbors training.

Nong-O was invited to train, and after a month of training he had his first fight.