Yutthana Kaensa (, born 7 January 1998), also known as Stamp Kiatniwat (แสตมป์ เกียรตินิวัฒน์), Stamp Sithmorseng (แสตมป์ ศิษย์หมอเส็ง), or Stamp Kratingdaenggym (แสตมป์ กระทิงแดงยิม), is a professional Thai boxer in the Flyweight division. At the age of 17, he was considered the youngest Thai world champion, although the title was for an interim championship. He is also a former WBA Asia Flyweight champion.

Biography and career Yutthana Kaensa, nicknamed Stamp, was born in Lao Suea Kok District (then part of Mueang Ubon Ratchathani District), Ubon Ratchathani Province, and is a cousin of Poonsawat Kratingdaenggym, a former WBA Super Bantamweight world champion.

He won the WPBF Light Flyweight title by defeating fellow Thai boxer Kwanthai Sithmorseng, a former WBA Minimumweight world champion, on August 8, 2014, at Sanam Luang, Bangkok. On September 23 of the same year, he captured the WBA Asia Flyweight title by defeating Samuel Tehuayo, an Indonesian boxer, at Ayutthaya City Park, Ayutthaya Province. He successfully defended this title twice.

On July 29, 2015, he claimed the WBA Flyweight interim title by defeating Gregorio Lebron, a Dominican contender, in Loei Province. He later defended the title against Lebron again on February 9, 2016, at Bangkokthonburi University, Bangkok.

On December 31, 2016, he challenged Kazuto Ioka, the reigning Japanese WBA Flyweight world champion, in an elimination bout at Shimazu Arena, Kyoto, Japan. He lost by TKO in the seventh round.

Stamp regularly trained at the boxing gym inside Bangkokthonburi University with Anant Tualue, the former trainer of Chana Porpaoin (a two-time WBA Minimumweight world champion) and Denkaosan Kaovichit, who held both the WBA Flyweight world title and the WBA Super Flyweight interim title.

On May 18, 2018, Kiatniwat lost the WBA Asia Flyweight title after being defeated by TKO in the second round by Jaysever Abcede, a Filipino contender, at Bangkokthonburi University. After the bout, his manager Niwat "Che-Mae" Laosuwanwat stated he would no longer support Kiatniwat's path to a championship, citing concerns that his body was too fragile.

Professional boxing record

ResultRecordOpponentTypeRound, timeDateLocationNotes29Loss24–5Lü BinTKO1 (10), 16 Mar 202328Win24–4Daeloniel McDelonUD105 Nov 202227Win23–4Adisak KetpiamTKO4 (8) 3 Sep 202226Loas22–4F. ZoramchhanaMD62 Jul 202225Win22–3Lekpetch Lookmhakrodyon111TKO 2 (6)4 Jun 202224Loss21–3Vyacheslav MirzaevTKO5 (10) 2 Mar 201923Win21–2Rolly SumalpongUD1210 Aug 201822Loss20–2Jaysever AbcedeKO2 (12) 15 May 201821Win20–1Macrea GandioncoKO4 (12) 28 Dec 201720Win19–1Michael EnriquezUD1222 Sep 201719Win18–1Michael EnriquezUD1229 Jul 201718Win17–1RajeshUD1217 Mar 201717Loss16–1Kazuto IokaKO7 (12) 31 Dec 201616Win16–0Gregorio LebronMD129 Sep 201615Win15–0Gregorio LebronMD1229 Jul 201514Win14–0Wilber AndoganKO5 (12)23 Mar 201513Win13–0Espinos SabuUD122 Jan 201512Win12–0Geboi MansalayaoKO2 (12)5 Dec 201411Win11–0Samuel TehuayoUD1223 Sep 201410Win10–0Kwanthai SithmorsengUD128 Aug 20149Win9–0Johan WahyudiTKO4 (6)4 Jul 20148Win8–0Safwan LombokUD61 May 20147Win7–0Petchsuksawat KiatphompetchTKO2 (6)21 Mar 20146Win6–0Dawut ManoproonrojTKO4 (6) 17 Jan 20145Win5–0John BimaTKO1 (6)26 Nov 20134Win4–0Phompetch KilasportsgymPTS617 Sep 20133Win3–0Auto Golf Snooker PTS623 Aug 20132Win2–0 Petchprakaifa Sor VisetkitTKO1 (6)28 May 20131Win1–0Jaokhumphol Kaolanlek GymPTS618 Apr 2013

References

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