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T
👑 Thamma Kosiri
🎾 Tennis player · compiled from tour.ltat.org
🎂 24 May (15y 4mo)
Strength rating
1882±46
#50 of 1280 ›from 370 matches actually playedComputed from real match results, not LTAT ranking points — higher means stronger
Strength by month1855 → 1882
♥·support this player · this week
51Trophies19Finals21Semifinals19Quarterfinals103Tournaments408Matches336–72W–L82%Win rate
🎾 122 draws across 103 tournaments — singles, doubles & mixed
Thamma Kosiri is a junior tennis player. Our LTAT archive holds 103 tournaments between 2019 and 2026. Best result so far — champion ×51. Match record 336–72 (82% wins). Currently #6 in BS 16 with 180 LTAT points.
🎾 Latest matches408
18 Apr2026vs Peeranut SanpunBS 18 · Final · #3 - PTT-ลอนเทนนิสพัฒนาฝีมือ ครั้งที่ 3 ภาคอีสาน (Northeast)✅ 6:0 5:218 Apr2026vs Prarinya DandonBS 18 · Semi-final · #3 - PTT-ลอนเทนนิสพัฒนาฝีมือ ครั้งที่ 3 ภาคอีสาน (Northeast)✅ 6:1 6:318 Apr2026vs Phumsiri AyanontBS 18 · Quarter-final · #3 - PTT-ลอนเทนนิสพัฒนาฝีมือ ครั้งที่ 3 ภาคอีสาน (Northeast)✅ 6:0 6:128 Mar2026vs Tattawat Yipintsoi / Nakhim Khieowkungwith Patcharaphol LeekulBD 16 · Final · เยาวชนเพื่อความชนะเลิศแห่งประเทศไทย ครั้งที่ 64 ชิงถ้วยพระราชทานฯ ประจำปี 2569✅ 6:4 6:1
28 Mar2026vs Tri SrisenBS 16 · Semi-final · เยาวชนเพื่อความชนะเลิศแห่งประเทศไทย ครั้งที่ 64 ชิงถ้วยพระราชทานฯ ประจำปี 2569❌ 6:3 1:6 1:6All matches (408) →📊 Career statistics
Matches336–7282%
Sets668–14882%
Games3191–127771%
counted from our archive — every completed match (a walkover has no sets)
👯 Doubles partners10
Nuttaphat KhunthongTournaments 3 · Matches 8 · best result: Quarterfinalist
Patcharaphol LeekulTournaments 2 · Matches 5 · best result: 🏆 Champion
Jiranut SriviriyanonTournaments 1 · Matches 3 · best result: Semifinalist
Matus ThongbunditTournaments 1 · Matches 3 · best result: Semifinalist
Dharma PantaratornTournaments 1 · Matches 3 · best result: Quarterfinalist
Show 5 more
Akkharakrit TantasuralerkTournaments 1 · Matches 2 · best result: 🏆 Champion
Alexandr SadovTournaments 1 · Matches 2 · best result: Quarterfinalist
Kiri SomjitchobTournaments 1 · Matches 1 · best result: 🏆 Champion
Trirat RattanasirivilaiTournaments 1 · Matches 1 · best result: 🏆 Champion
Witthawin SuwanmaneeTournaments 1 · Matches 1 · best result: Semifinalist
📈 Points over time
BS 16#623 Mar 2026 – 28 Sep 2026
BS 18#1229 Sep 2025 – 28 Sep 2026
MD#309 Mar 2026 – 28 Sep 2026
MS#609 Mar 2026 – 28 Sep 2026
each column is one tournament · gold = counting toward the current ranking (last 52 weeks)
line = ranking position week by week · #1 is at the top
🗓️ Where to play nextupcoming events in their categories
03OctPTT-Lawn Tennis Develop Skills Tournament 7 CentralBS 16, BS 1810OctBabolat Tennis Junior Championship 2026BS 1610OctSTW × Sly Black Tennis Junior ChampionshipsBS 16, BS 18🪜 Ladder neighbourswho stands around them in BS 16
#3Patcharaphol Leekul280 ptsITF 1,059#4Phasin SinchalongITF 1,077#5David AvayouITF 1,306#6Thamma Kosiri180 ptsITF 1,349
#7Napradh Lalai100 ptsITF 1,560#8Varit LertsinthapanontITF 2,012#9Panawat Sienghen540 ptsITF 2,754🔗 This page is yours — show it off!
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🎾 Recent form
✅ Recent wins
❌ Recent losses
Tennis tournament history103
20265 tournaments
18Apr 2026PTT Northeast Tennis Development Championship 3BS 18🏆 Champion22028Mar 2026Thailand National Youth Championship 64th Edition for the King’s Cup 2569 (2026)BS 16SemifinalistBD 16🏆 Champion18016Mar 2026Thailand Championships, Stadium 2, with total prize money of 600,000 THBMS QMDQuarterfinalist5009Mar 2026Thailand Championships, Stage 1, Total Prize Money 600,000 THBMSPlayedMDQuarterfinalist5031Jan 2026National Youth Tennis Team Selection 2569BS 16Semifinalist20255 tournaments
04Oct 2025PTT Northern Tennis Skill Development No.8BS 18🏆 Champion22015Sep 2025THOS. Tennis for the Triumph of Thailand, 85th EditionMSPlayedMDQuarterfinalist29Mar 202563rd Thailand National Youth Championship for Excellence Vying for the Royal TrophyBS 14🏆 Champion01Feb 2025National Youth Tennis Player Selection for 2568 yearBS 14Semifinalist25Jan 2025PTT-Lon Tennis Develop Skills Tournament No. 1 (Central)BS 16🥈 Runner-up
20248 tournaments
14Dec 2024PTT - NSDF Lawn Tennis Development Skill Master Round Year 2024BS 14🏆 Champion16Nov 2024Greta Sport Club Junior Tennis Tournament 2024 # 5BD 14🏆 Champion21Sep 2024PTT-Lawn Tennis Develop Skills Tournament 7 CentralBS 14🏆 Champion01Jun 2024PTT-Lon Tennis Develop Skills Tournament No. 4 Central (Central)BS 14🏆 Champion27Apr 2024PTT Northeast Tennis Development Championship 3BS 14🏆 Champion30Mar 2024Thailand National Junior Championship 62nd Edition 2024BS 16QuarterfinalistBD 16Quarterfinalist17Feb 2024PTT-Letelennis Develop Skill Tournament Series No. 2 Central (Central)BS 14Semifinalist03Feb 2024National Youth Tennis Players Selection Team for the Year 2567BS 14Semifinalist202315 tournaments
28Oct 2023PTT - Development Tennis Championship Series 7 Central (Central)BS 14🏆 Champion23Sep 2023PTT - PTT Tennis Development Circuit Central Championship, 6th EditionBS 14🏆 Champion29Jul 2023LTO Junior Championship 2023 # 3BS 14🏆 Champion05Aug 2023PTT - Development Tennis Skill Improvement Tournament No. 5 Central (Central)BS 12🏆 Champion15Jul 2023PTT - Development Tennis Championship Series Central 4BS 14🥈 Runner-up01Jul 2023Marvin-CV Junior Campionships 2023 By Air Asia ,Babolat, Asics,Yonex,Wilson, Dever Circuit3BS 14🥈 Runner-up06May 2023Marvin-CV Junior Campionships 2023 By Air Asia ,Babolat, Asics,Yonex,Wilson, Dever Circuit2BS 14🏆 Champion27May 2023LTO Junior Championship 2023 # 2BS 14🏆 Champion29Apr 2023Nextgen Star Thai Tennis Junior Championship 2023BS 14🏆 Champion25Mar 2023Nextgen Star Thai Tennis Junior Championship 2023BS 14🏆 Champion30Mar 2023Youth Excellence in Thailand Championship for the King’s Cup 61st Edition, 2023BS 12🏆 ChampionBD 12Round of 1618Mar 2023PTT - Development of Tennis Skill Contest Central Region (Central) - 2nd EditionBS 12🏆 Champion11Mar 2023LTO Junior Championship 2023 # 1BS 14🏆 Champion18Feb 2023PTT - PTT Tennis Development Tournament Series Central Division (Central)BS 12🏆 Champion21Jan 2023Selection of Thai national youth tennis players for the year 2023, age groups 12 & under, 14 & under, and 16 & underBS 12🏆 Champion202224 tournaments
17Dec 2022PTT - NSDF LTON Tennnis Development Master Round for Year 2022BS 12🏆 Champion19Nov 202223th Schools Tennis Junior Tournament 2022BS 14🥈 Runner-upBD 12🏆 Champion26Nov 2022PTT - NSDF Tennis Development Skill Series Central Region (8th)BS 12🏆 Champion29Oct 2022PTT - NSDF Lawn Tennis Development Skill Camp 7th, Central (Central)BS 12🏆 Champion01Oct 2022JNT Tennis Championship 2022BS 12🏆 ChampionBS 14Quarterfinalist24Sep 2022PTT - NSDF Lawn Tennis Development Camp Series 6 Central (Central)BS 12🏆 Champion03Sep 2022JNT Junior Championship 2/2565BS 12🏆 ChampionBS 14🥈 Runner-up12Aug 2022CV Asics Juniors 2022BS 12🏆 ChampionBS 14Quarterfinalist23Jul 2022LTO Junior Championship 2022BS 12🏆 Champion09Jul 2022PTT - NSDF Tennis Development Skills Tournament 5 Central (Central)BS 12🏆 Champion11Jun 2022PTT - NSDF Northeast Tennis Development Cup Series 4BS 12🏆 Champion04Jun 202216th Artengo - E@ Schools Tennis Junior Tournament 2022BS 12🏆 ChampionBS 14QuarterfinalistBD 12🏆 Champion21May 2022LTO Junior Championship 2022BS 12🥈 Runner-up28May 2022Broadcom Tennis Camp Junior Challenge 2022 Edition 5BS 12🏆 Champion14May 2022PST Academy Juniors 2022 by USCCBS 12🏆 Champion23Apr 2022PTT-Lon Tennis Develop Skills Tournament No. 3 Central (Central)BS 12🥈 Runner-up19Mar 2022LTO Junior Championship 2024 – 1stBS 12🏆 Champion26Mar 2022Buriram Juniors 2022 Road To Tennis NextGen FinalBS 12🏆 Champion12Mar 2022PTT - NSDF Tennis Development Camp Circuit Central (2nd)BS 12🏆 Champion02Apr 202288th Thammasat Tennis Championship 2022BS 12🏆 Champion15Feb 2022Thailand National Youth Championship for Excellence Tennis – King’s Cup No. 60, 2565BS 12SemifinalistBD 12Quarterfinalist12Feb 2022PTT - NSDF Northeastern Tennis Development Series Round 1 (Northeast)BS 12🏆 Champion22Jan 2022KhonKaen Srichaphan Junior Tennis Friendship Tournament 2022BS 12🥈 Runner-up29Jan 2022PTT- NSDF Lawn Tennis Development Master Round 2564BS 10Semifinalist202113 tournaments
11Dec 2021Artengo-10th Schools Tennis Juniors TournamentBS 12Semifinalist06Nov 2021LTO Junior Championships 2021 第8回BS 12Semifinalist27Nov 2021PTT - Development Tennis Series Central Circuit 8th EditionBS 12Quarterfinalist30Oct 2021LTO Junior Championships 2021 7thBS 12🥈 Runner-up23Oct 2021PTT - Development Tennis Championship Series 7 Central (Central)BS 12Semifinalist04Oct 2021Thailand Youth Tennis Championship for Victory 59th Edition 2021BS 10QuarterfinalistBD 10Semifinalist02Oct 2021Artengo-9th Schools Tennis Juniors TournamentBS 12🥈 Runner-upBD 12Semifinalist27Mar 2021TFL Tecnifibre Junior 250 1BS 10SemifinalistBS 12Quarterfinalist20Mar 2021LTO Junior Championships 2021 1stBS 10🥈 Runner-up13Mar 2021PTT - Development Tennis Skills Tournament, Northeast Region, 2nd EditionBS 10🏆 Champion03Apr 2021Korat Young Cup 2021 – 2nd EditionBS 10🏆 ChampionBS 12🥈 Runner-up27Feb 2021Karat Tennis Camp Junior Challenge 2021 Round 2BS 12Semifinalist20Feb 2021PTT - PTT Tennis Development Tournament, Northeast Region Round 1BS 10🏆 Champion202016 tournaments
28Nov 2020PTT - Development of Skills Tennis Tournament in the Northeast Region, 6th editionBS 10🏆 Champion07Nov 2020PTT - PTT tennis development skills event, Northeastern region 5th editionBS 10🥈 Runner-up31Oct 2020Tennis Camp Junior Challenge 2020 No. 10BS 10🥈 Runner-up17Oct 2020Chamren Tennis Cup Lan Tennis Development of Rising Star Series 4BS 10Semifinalist19Sep 2020Cirque Tennis Camp Junior Challenge 2020, 9th editionBS 10🏆 Champion26Sep 2020PTT - Development of Tennis Skills Series 4 Northeast RegionBS 10🏆 Champion03Sep 2020Thailand Youth Tennis Championship for Excellence, 58th edition, 2563 yearBS 10PlayedBD 10Semifinalist22Aug 2020Samut Sakhon Junior Championship for Governor Trophy Samut Sakhon Province 2nd timeBS 10Quarterfinalist29Aug 2020PTT - develop tennis skills tournament, Northeast region, 3rd editionBS 10🥈 Runner-up11Jul 2020PTT - Development Tennis Skills Tournament, Northeast Region, 2nd EditionBS 10🥈 Runner-up18Jul 2020Jamnearn Tennis Cup Lontennis Develop Rising Star Development Cup 3rd editionBS 10Semifinalist07Mar 2020Sriracha Talent Junior ChampionshipsBS 10Semifinalist22Feb 2020Sar Tee Tennis Camp Junior Challenge 2020 Event 2BS 10Semifinalist08Feb 2020PTT Tennis Skill Development No.1 Central RegionBS 10Round of 1625Jan 2020Sarter Tennis Camp Junior Challenge 2020 Round 1BS 10Round of 1618Jan 2020Chamroen Tennis Cup Long Tennis Development of Rising Stars Tournament No. 1BS 10Round of 16201917 tournaments
21Dec 2019Cape Town Tennis Camp Junior Challenge 2019 12th editionBS 8🏆 Champion28Dec 2019Greta Tennis Kids Cup 2019 Circuit 3BS 8SemifinalistBS 10Round of 1614Dec 2019YAK Junior 2019 Ep.2 (Postponed from 21-22 Dec 62)BS 10Round of 1607Dec 2019Bangkok Unirversity Junior Cup 2019 Circuit 3BS 8🏆 ChampionBS 10Quarterfinalist30Nov 2019AHS TU Tennis Championship 2019 (postponed from 23-24 November 2019)BS 8🏆 Champion23Nov 2019Spectrum Tennis Camp Junior Challenge 2019, 11th EditionBS 8🥈 Runner-up16Nov 2019TOP ONE - LTO Junior Championship 2019 6th editionBS 10Round of 1626Oct 2019Karat Tennis Camp Junior Challenge 2019 10thBS 8Semifinalist02Nov 2019PTT - Tennis Development Series Northeast Region 7BS 8Quarterfinalist07Sep 2019ACS Talent Junior ChampionshipBS 8Quarterfinalist28Sep 2019Bangkok Unirversity Junior Cup 2019 Circuit 2BS 8🥈 Runner-up24Aug 2019Tarantar Tennis Camp Junior Challenge 2019–8BS 8🥈 Runner-up31Aug 2019YAK Junior 2019 Ep.1BS 10Round of 1610Aug 2019CV YOUTH CUP 2019BS 8Quarterfinalist24Aug 2019PTT - Promoting Skills Tennis Open, Central Region, 5th EditionBS 18Round of 1613Jul 2019PTT - PTT Tennis Development Cup 4th Central RegionBS 8Quarterfinalist29Jun 2019Tsar Tennis Camp Junior Challenge 2019, 6th editionBS 8Quarterfinalist