Chayaphon Moonsri (; formerly: Saengsuree Moonsri; แสงสุรีย์ มูลศรี; born 27 October 1985), known as Wanheng Menayothin (วันเฮง มีนะโยธิน) or Wanheng Kaiyanghadaogym is a Thai professional boxer and Muay Thai fighter who held the WBC mini-flyweight title from 2014 to 2020.
Early life and Muay Thai career Moonsri graduated with a Bachelor of Arts from Bangkokthonburi University. Prior to becoming a professional boxer, Menayothin was a Muay Thai fighter. Kaiyanghadaogym took up Muay Thai at 13 and he sustained his family with the money he earned from fighting. He went on to become a Lumpinee champion and a Thai national champion.
Boxing career Wanheng made his professional debut in January 2007. He won the WBC Youth mini-flyweight title in his third fight. He later claimed two more secondary titles, with the WBC International Silver title and the WBC International title. In June 2011, Wanheng outpointed former world champion Florante Condes. On 31 May 2013, Moonsri defeated Raul Pusta Jr. by ninth-round technical knockout to retain the WBC International mini-flyweight title.
On 6 November 2014, Wanheng won his first world title when he defeated defending champion Oswaldo Novoa to win the WBC mini-flyweight title. Novoa was badly hurt by an overhand punch in the ninth round and he retired in the corner. Wanheng's promoter, Virat Vachirarattanawong, paid $175,000 to host the fight, a rarely high purse for the weight class. In his sixth defense, Wanheng beat Melvin Jerusalem via unanimous decision (115–113, 114–113, 114–113). Two scorecards were swung by a point deduction Jerusalem received after he threw a low blow.
Undefeated World record On 2 May 2018, Wanheng equalled Floyd Mayweather Jr.'s 50–0 record by knocking out Panamanian opponent Leroy Estrada in the fifth round in a mandatory title defense.
On 29 August 2018, Wanheng eclipsed Mayweather, reaching 51–0 with a points win over Pedro Taduran.
On 31 May 2019, Menayothin fought Tatsuya Fukuhara. Despite suffering a cut, Menayothin managed to outbox his opponent. In the eighth round, the cut was deemed too severe by the referee, who stopped the fight early, and went to the scorecards. Menayothin was leading on all three scorecards at the time, 79-73, 78-74 and 78-74, and was awarded the technical decision victory and retained his WBC mini-flyweight belt.
In his next fight, Menayothin defended his title against Simphiwe Khonco. The WBC champion won via unanimous decision.
First loss On 27 November 2020, he faced the WBC's number three ranked contender, Panya Pradabsri, at the City Hall Ground in Nakhon Sawan, Thailand. After a closely contested fight Menayothin suffered the first defeat of his career, losing his WBC title via twelve-round unanimous decision. All three judges scored the bout 115–113 in favour of Pradabsri.
Wanheng faced Knockout CP Freshmart for WBA (Super) mini-flyweight title on July 20, 2022. He lost the fight by unanimous decision, with scores of 116-112, 119-109 and 117-111.
Titles and accomplishments Muay Thai Lumpinee Stadium 2006 Lumpinee Stadium Mini Flyweight (105 lbs) Champion Two successful title defenses Toyota Marathon 2010 Toyota Marathon Tournament 108 lbs Winner
Professional boxing record
ResultRecordOpponentTypeRound, timeDateLocationNotes59LossKnockout CP FreshmartUD1220 Jul 2022 5855–2 Jinnawat RienpitKO4 (6), 24 May 2022 57Loss55–2Panya PradabsriUD1229 Mar 2022 56Win55–1Jinnawat RienpitKO3 (6), 2 Nov 2021 55Loss54–1Panya PradabsriUD1227 Nov 2020 54Win54–0Simphiwe KhoncoUD1225 Oct 2019 53Win53–0Tatsuya FukuharaTD8 (12), 31 May 201952Win52–0Mektison MargantiUD616 Nov 201851Win51–0Pedro TaduranUD1229 Aug 201850Win50–0Leroy EstradaTKO5 (12), 2 May 201849Win49–0Tatsuya FukuharaUD1225 Nov 201748Win48–0Jack AmisaUD625 Aug 201747Win47–0Omari KimweriUD123 Jun 201746Win46–0Jeysever AbcedeUD631 Mar 201745Win45–0Melvin JerusalemUD1225 Jan 201744Win44–0Silem Serang614 Dec 201643Win43–0Saúl JuárezUD122 Aug 201642Win42–0Edo AnggoroKO4 (8)27 May 201641Win41–0Go OdairaTKO5 (12), 3 Mar 201640Win40–0Young Gil BaeTKO9 (12), 24 Nov 201539Win39–0Ardi BuyungTKO4 (6)8 Oct 201538Win38–0Jerry TomogdanKO9 (12), 2 Jun 201537Win37–0Jeffrey GaleroUD125 Feb 201536Win36–0Oswaldo Novoa9 (12), 6 Nov 201435Win35–0Samuel TehuayoUD627 Jun 201434Win34–0Domi NenokebaTKO4 (6)25 Apr 201433Win33–0Heri AmolUD628 Mar 201432Win32–0Madit SadaUD627 Dec 201331Win31–0Jack AmisaUD1031 Oct 201330Win30–0Yuma IwahashiUD1230 Aug 201329Win29–0Domi NenokebaTKO2 (6)24 Jul 201328Win28–0Raul Pusta, Jr.TKO9 (12), 31 May 201327Win27–0Samuel TehuayoUD629 Mar 201326Win26–0Jack AmisaUD625 Jan 201325Win25–0Roilo GolezUD123 Dec 201224Win24–0Jerson LuzaritoTKO8 (12), 28 Sep 201223Win23–0Safwan LombokUD622 Jun 201222Win22–0Boy TantoTKO227 Apr 201221Win21–0Jonathan RefugioTKO9 (12), 24 Feb 201220Win20–0Albert AlcoyUD623 Dec 201119Win19–0Crison OmayaoUD1211 Nov 201118Win18–0Jetly PurisimaKO11 (12), 20 Sep 201117Win17–0Florante CondesUD1224 Jun 201116Win16–0Noli MoralesTD6 (12), 31 Mar 201115Win15–0Remy Cuambot10 (12), 6 Jan 201114Win14–0Jayson RotoniUD126 Aug 201013Win13–0Ronelle FerrerasUD1230 Apr 201012Win12–0Jayson RotoniUD1224 Dec 200911Win11–0Justin Golden BoyKO3 (10), 2 Oct 200910Win10–0Ruel LaguneroUD1026 Jun 20099Win9–0Adi NukungUD1025 Feb 20098Win8–0Ardin DialeUD1031 Oct 20087Win7–0Kuk Chok JoTKO6 (10)29 Aug 20086Win6–0Sofyan EffendiUD1025 Apr 20085Win5–0Armando dela Cruz5 (10)24 Oct 20074Win4–0Dennis JuntillanoUD1031 Jul 20073Win3–0Ma Yiming1 (10), 30 Mar 20072Win2–0Danny LinasaUD823 Feb 20071Win1–0Roel Gade626 Jan 2007
Muay Thai record
|- style= "background:#fbb;" | 2011-05-10 || Loss ||align=left| Phetmorakot Petchyindee Academy || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- |- style="background:#cfc;" | 2010-11-02|| Win ||align=left| Khunsuek P.N.Gym || Lumpinee Stadium || Bangkok, Thailand || Decision|| 5 || 3:00
|- style="background:#cfc;" | 2010-08-25|| Win||align=left| Petchsurat Sor.Yupinda || Toyota Marathon Tournament, Final|| Thailand || Decision || 3 || 3:00 |- ! style=background:white colspan=9 | |- style="background:#cfc;" | 2010-08-25|| Win||align=left| Jingreedthong ToyotaKeMotor || Toyota Marathon Tournament, Semifinals|| Thailand || Decision || 3 || 3:00
|- style="background:#cfc;" | 2010-08-25|| Win||align=left| Pornsawan Porpramook || Toyota Marathon Tournament, Quarterfinals || Thailand || Decision || 3 || 3:00
|- style="background:#cfc;" | 2010-07-13|| Win ||align=left| Chaidet Sor.Sor.Suriya || Lumpinee Stadium || Bangkok, Thailand || TKO || 2 || |- |- style="background:#fbb;" | 2010-03-05|| Loss ||align=left| Khunsuek P.N.Gym || || Bangkok, Thailand || Decision|| 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 2009-09-11|| Win||align=left| Farungruang Sor.Punsawat || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 2009-05-01|| Loss ||align=left| Phetmorakot Teeded99 || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2008-12-08|| Win ||align=left| Jomhod Eminentair || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2008-06-27|| Win ||align=left| Sriphatthanalek SukkasemResort || Wanboonya, Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2008-02-27|| Win ||align=left| Sriphatthanalek SukkasemResort || Kiatsingnoi, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2008-01-02|| Win ||align=left| Nongnan Kiatprathum || Daorungprabat, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 2007-12-07|| Loss ||align=left| Nongnan Kiatprahtum || Lumpini Champion krikkrai, Lumpinee Stadium || Bangkok, Thailand || Decision|| 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 2007-08-31|| Win ||align=left| Khom Sor.Ploenchit || Petchyindee, Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2007-05-01|| Win ||align=left| Sripatthanalek Sor.Ploenchit || Lumpinee Stadium || Bangkok, Thailand || KO || 4 ||
|- style="text-align:center; background:#cfc;" | 2006-11-15 || Win||align=left| Palangpon Piriyanoppachai || Meenayothin, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2006-09-22|| Win ||align=left| Jomhod Eminentair || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#fbb;" | 2006-08-29 || Loss||align=left| Norasing Lukbanyai || Lumpinee Stadium|| Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2006-08-04|| Win ||align=left| Nampetch Sor.Thantip || Petchyindee, Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 2006-06-02|| Win ||align=left| Khunponjew Siangsawanpanpa || Lumpinee Stadium || Bangkok, Thailand || KO (Punches)|| 1 || |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 2006-05-17|| Win ||align=left| Petchboonchu Borplaboonchu || Meenayothin, Rajadamnern Stadium || Bangkok, Thailand || TKO (Referee stoppage) || 3 ||
|- style="background:#fbb;" | 2006-02-22|| Loss||align=left| Nampetch Sor.Thantip || Meenayothin, Rajadamnern Stadium || Bangkok, Thailand || Decision|| 5 || 3:00
|- style="background:#cfc;" | 2005-12-22|| Win ||align=left| Khaimookdam Pomkhwannarong || Rajadamnern Stadium || Bangkok, Thailand || Decision|| 5 || 3:00
|- style="text-align:center; background:#fbb;" | 2005-09-26 || Loss||align=left| Palangpon Piriyanoppachai || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="text-align:center; background:#c5d2ea;" | 2005-08-08 || Draw||align=left| Khaimookdam Pomkhwannarong || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="text-align:center; background:#cfc;" | 2005-06-09 || Win||align=left| Teelek Por.Telakun || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="text-align:center; background:#cfc;" | 2005-05-19 || Win||align=left| Yokpetch Sor.Ploenchit || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" |2005-02-17 |Win | align="left" | Rachasee Sor.Jaipetch |Onesongchai, Rajadamnern Stadium |Bangkok, Thailand |KO |2 | |- style="text-align:center; background:#cfc;" | 2004-12-06 || Win||align=left| Aidu 13RienExpress || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#c5d2ea;" | 2004-10-11 || Draw||align=left| Linglom Kiatthaworn || Phettongkawan, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="text-align:center; background:#fbb;" | 2004-07-19 || Loss||align=left| Palangpon Piriyanoppachai || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 2004-05-20 || Win||align=left| Nuengthep EminentAir || Kiatsingnoi, Rajadamnern Stadium || Bangkok, Thailand || KO|| 4 ||
|- style="background:#c5d2ea;" | 2004-04-05 || Draw||align=left| Farungruang Sor.Poonsawat || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 2004-02-18|| Loss ||align=left| Weraburuthai Saksomshy || Rajadamnern Stadium || Bangkok, Thailand || TKO || 5 || 3:00
|- style="background:#cfc;" | 2003-11-27 || Win||align=left| Farungruang Sor.Poonsawat || Onesongchai, Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 2003-10-30|| Loss ||align=left| Luknimit Singklongsi || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;"