Mana Sornjam (; born December 7, 1965), known professionally as Manasak Sor.Ploenchit (), was a Thai professional Muay Thai fighter. He was a two-weight Rajadamnern Stadium champion who was famous during the 1980s and 1990s.
Manasak was born in the Rayong Province where he started Muay Thai during the mid 1970s. He rapidly reached the Bangkok circuit where he had a few fights under the name Manasak Asawamongkol, he then went back to fight in eastern Thailand where he became regional champion. Manasak then joined the Sor Ploenchit camp in Bangkok under the teaching of Sathien Sathiensut and became a successful fighter.
During his prime in the 1980s Manasak was known as a highly skilled fighter with a complete arsenal and one of the sharpest eye in the ring. He beat many notable fighters of his era such as Kongtoranee Payakaroon, Saencherng Pinsinchai, Sangtiennoi Sor.Rungroj, Panomtuanlek Hapalang, Jaroenthong Kiatbanchong or Chanchai Sor Tamarangsri.
At his peak Manasak received fight purse as high as 120,000 baht. He shortly retired in early 1986 and came back later that year.
As of 1987 Manasak was a two time Rajadamnern Stadium champion and won the Thailand King's belt.
After his fighting career Manasak went back to his hometown where he owned a shop with his family.
Awards
|- style="background:#fbb;" | 1991-07-24 || Loss ||align=left| Nuengsiam Kiatwichian || Rajadamnern Stadium || Bangkok, Thailand || KO || 4 ||
|- style="background:#c5d2ea;" | 1991-06-05 || Draw ||align=left| Nuengsiam Kiatwichian || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1991- || Loss ||align=left| Jack Kiatniwat || Rajadamnern Stadium || Bangkok, Thailand || Decision ||5 ||3:00
|- style="background:#fbb;" | 1991- || Loss ||align=left| Jack Kiatniwat || Rajadamnern Stadium || Bangkok, Thailand || Decision ||5 ||3:00
|- style="background:#fbb;" | 1991-02-20 || Loss ||align=left| Taweechai Wor.Preecha || Rajadamnern Stadium || Bangkok, Thailand || Decision ||5 ||3:00
|- style="background:#cfc;" | 1990-11-23 || Win||align=left| Kyoji Saito || AJKF "INSPIRING WARS 3rd" || Tokyo, Japan || TKO ||5 ||2:23
|- style="background:#fbb;" | 1990-11-08 || Loss ||align=left| Nuengsiam Kiatwichian || Rajadamnern Stadium || Bangkok, Thailand || TKO (Doctor Stoppage) || 4 ||
|- style="background:#fbb;" | 1990-09-29 || Loss ||align=left| Chanalert Muanghatyai || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1990-07-05 || Loss ||align=left| Chanalert Muanghatyai || Rajadamnern Stadium || Bangkok, Thailand || TKO (Doctor stoppage) || 3 ||
|- style="background:#c5d2ea;" | 1990-03-21 || Draw ||align=left| Poonsawat Wor.Singsanae || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1990-03-01 || Win ||align=left| Sombat Sor.Thanikul || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#c5d2ea;" | 1990-01-29 || Draw ||align=left| Sombat Sor.Thanikul || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1989-09-27 || Loss ||align=left| Jack Kiatniwat || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1989-08-15 || Loss ||align=left| Namphon Nongkee Pahuyuth|| Lumpinee Stadium|| Bangkok, Thailand || Decision|| 5 || 3:00
|- style="background:#fbb;" | 1989-07-09|| Loss ||align=left| Sangtiennoi Sor.Rungroj || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1989-06-03 || Win ||align=left| Jaroenthong Kiatbanchong || || Trang, Thailand || TKO || 3 ||
|- style="background:#fbb;" | 1989-05-02 || Loss ||align=left| Saencherng Narupai || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1989-04-07 || Win ||align=left| Petchdam Lukborai || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1989-03-06 || Win ||align=left| Chanchai Sor.Tamarangsri || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#c5d2ea;" | 1988-12-07 || NC ||align=left| Sanit Wichitkriangkrai|| Rajadamnern Stadium || Bangkok, Thailand || Ref.stop (Sanit dismissed) || 4 ||
|- style="background:#cfc;" | 1988-09-07 || Win ||align=left| Tuanthong Lukdecha || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1988-06-24 || Loss ||align=left| Namphon Nongkeepahuyuth || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1988-04-08 || Loss ||align=left| Jomwo Chernyim || Lumpinee Stadium || Bangkok, Thailand || KO || 3 ||
|- style="background:#fbb;" | 1988-03-04 || Loss ||align=left| Chanchai Sor.Tamarangsri || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1987-11-27 || Loss ||align=left| Panomtuanlek Hapalang || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#fbb;" | 1987-10-27|| Loss ||align=left| Chamuekpet Hapalang || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#c5d2ea;" | 1987-09-22 || Draw ||align=left| Chanchai Sor Tamarangsri || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1987-07-31 || Win ||align=left| Panomtuanlek Hapalang || Lumpinee Stadium || Bangkok, Thailand || KO (Punches)|| 1 ||
|- style="background:#cfc;" | 1987-06-19 || Win ||align=left| Saencherng Narupai || Lumpinee Stadium || Bangkok, Thailand || TKO (Doctor stoppage) || 2 || |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 1987-05-31 || Win ||align=left| Saphaphet Kiatphetnoi || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 1987-03-23 || Win ||align=left| Sombat Sor.Thanikul || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1987-02-26 || Win ||align=left| Sangtiennoi Sor.Rungroj || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1986-12-22 || Win ||align=left| Kingsaknoi Saknarin || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1986-11-11 || Loss ||align=left| Jomwo Chernyim || Lumpinee Stadium || Bangkok, Thailand || KO (Punches)|| 3 ||
|- style="background:#fbb;" | 1986-04-03 || Loss || align=left| Jomwo Chernyim || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1986-02-10 || Win || align=left| Sangtiennoi Sor.Rungroj || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1985-11-22 || Loss || align=left| Jomwo Chernyim || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1985-10-24 || Loss ||align=left| Chamuekpet Hapalang || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-09-23 || Win ||align=left| Jampatong Na Nontachai || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-09-02 || Win || align=left| Jomwo Chernyim || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-07-17 || Win || align="left" | Saencherng Narupai || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-04-02 || Win ||align=left| Pornsaknoi Sitchang || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-03-08|| Win||align=left| Bangkhlanoi Sor.Thanikul ||OneSongchai, Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1985-01-08|| Win ||align=left| Bangkhlanoi Sor.Thanikul || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1984-11-21|| Loss ||align=left| Nikhom Phetphothong || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#fbb;" | 1984-06-29 || Loss ||align=left| Samransak Muangsurin || Lumpinee Stadium || Bangkok, Thailand || KO || 3 ||
|- style="background:#c5d2ea;" | 1984-05-10 || Draw ||align=left| Panmongkhol Hor.Mahachai || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1984-04-10|| Win ||align=left| Kongtoranee Payakaroon || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1984-01-27 || Win ||align=left| Panmongkhol Hor.Mahachai || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1983-12-28 || Win ||align=left| Nikhom Phetphothong || Rajadamnern Stadium || Bangkok, Thailand || KO || 3 || |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 1983-11-11 || Win ||align=left| Palannoi Kiatanan || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1983-08-26|| Loss ||align=left| Jakrawan Kiatsakthewan || Lumpinee Stadium || Bangkok, Thailand || Referee Stoppage || 4 ||
|- style="background:#cfc;" | 1983-06-15 || Win ||align=left| Sakchai Singkhiri || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1983-05-25 || Win ||align=left| Piyarat Sor.Narongmit || || Bangkok, Thailand || Referee Stoppage || 3 ||
|- style="background:#fbb;" | 1983-04-05|| Loss ||align=left| Palannoi Kiatanan || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1983-03-04 || Loss ||align=left| Jakrawan Kiatsakthewan || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1983-01-07 || Win ||align=left| Roengnarong Thairungrueng || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#c5d2ea;" | 1982-12-07 || NC ||align=left| Fonluang Luksadetmaephuangthong|| || Bangkok, Thailand || Fonluang dismissed || 5 ||
|- style="background:#cfc;" | 1982-11-02 || Win ||align=left| Wanmai Phetbundit || || Bangkok, Thailand || KO || 5 ||
|- style="background:#cfc;" | 1982-09-07 || Win ||align=left| Falikhit Sitmanathep || Lumpinee Stadium || Bangkok, Thailand || KO || 4 ||
|- style="background:#fbb;" | 1982-07-09 || Loss ||align=left| Sornsilp Sitnoenpayom || Lumpinee Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1982-06-10 || Win ||align=left| Chamnansuk Na Pattaya || || Pattaya, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1982-05-19 || Loss ||align=left| Wanmai Phetbundit || Rajadamnern Stadium || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1982-04-07 || Win ||align=left| Arthit Somsakanping || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1982-02-12 || Win ||align=left| Pungthong Fairtex || || Bangkok, Thailand || KO || 3 ||
|- style="background:#cfc;" | 1981-12-27 || Win ||align=left| Narak Sitkuanyim|| || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1981-11-23 || Win ||align=left| Ruengchai Thairungruang || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1981-11-03 || Win ||align=left| Ekkarat Sakcharoen || || Bangkok, Thailand || KO || 3 ||
|- style="background:#fbb;" | 1981-08-24 || Loss ||align=left| Chokdee Kiatpayathai || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1980- || Win ||align=left| Dang Krutawut || || Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1980- || Win ||align=left| Saengphet Lukwatphailom || || Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 1980- || Win ||align=left| Theerasongwan Chomphutong || || Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1980- || Win ||align=left| Siasanao Phibanyathi || || Thailand || Decision || 5 || 3:00 |- ! style=background:white colspan=9 |
|- style="background:#cfc;" | 1980-04-01 || Win ||align=left| Rungrojnoi Sor.Sitsananda || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#fbb;" | 1980-02-05 || Loss ||align=left| Yodchat Deeprasert || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1979-12-07 || Win ||align=left| Surasak Khomkreemak || || Bangkok, Thailand || Decision || 5 || 3:00
|- style="background:#cfc;" | 1979-10-23 || Win ||align=left| Phanomnoi Lukprabat || || Bangkok, Thailand || Decision || 5 || 3:00
|- | colspan=9 | Legend: