Kasidit Samrej (Thai: กษิดิศ สำเร็จ; born 26 January 2001) is a Thai tennis player. He has a career high ATP singles ranking of world No. 346 achieved on 25 August 2025 and a career high ATP doubles ranking of No. 673 achieved on 18 May 2026.[1] He is currently the No. 1 Thai player.[2]

Kasidit Samrej
Country (sports) Thailand
Born (2001-01-26) 26 January 2001 (age 25)
Bangkok, Thailand
Prize moneyUS $189,462
Singles
Career record3–9 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
Highest rankingNo. 346 (25 August 2025)
Current rankingNo. 385 (18 May 2026)
Grand Slam singles results
Australian Open1R (2025)
Doubles
Career record0–1 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
Highest rankingNo. 673 (18 May 2026)
Current rankingNo. 673 (18 May 2026)
Last updated on: 18 May 2026.

Samrej represents Thailand at the Davis Cup, where he has a W/L record of 10–8.[3][4]

Samrej won the Asia-Pacific Wildcard Playoff for the 2025 Australian Open,[5] making him the first Thai man to compete in the singles event in a Grand Slam tournament since Danai Udomchoke at the 2012 Australian Open.[6][7] He lost in the first round to fifth seed Daniil Medvedev in five sets.[8][9]

ATP Challenger and ITF World Tennis Tour finals

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Singles: 12 (6–6)

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Legend
ATP Challenger Tour (0–0)
ITF World Tennis Tour (6–6)
Finals by surface
Hard (6–6)
Clay (0–0)
Grass (0–0)
Carpet (0–0)
Result W–L    Date    Tournament Tier Surface Opponent Score
Win 1–0 Jun 2022 M25 Chiang Rai, Thailand World Tennis Tour Hard Russia Konstantin Kravchuk 6–3, 7–6(7–3)
Loss 1–1 Jun 2023 M25 Nakhon Si Thammarat, Thailand World Tennis Tour Hard Japan Hiroki Moriya 6–2, 2–6, 2–6
Loss 1–2 Aug 2023 M15 Nakhon Si Thammarat, Thailand World Tennis Tour Hard Kazakhstan Grigoriy Lomakin 6–7(2–7), 6–4, 3–6
Win 2–2 Jul 2024 M15 Nakhon Si Thammarat, Thailand World Tennis Tour Hard Malaysia Mitsuki Wei Kang Leong 6–4, 6–3
Win 3–2 Jul 2024 M15 Nakhon Si Thammarat, Thailand World Tennis Tour Hard Thailand Pawit Sornlaksup 6–3, 6–2
Loss 3–3 Aug 2024 M15 Nakhon Si Thammarat, Thailand World Tennis Tour Hard Ilia Simakin 3–6, 4–6
Win 4–3 Sep 2024 M25 Nakhon Si Thammarat, Thailand World Tennis Tour Hard India Sasikumar Mukund 6–3, 6–3
Loss 4–4 Jul 2025 M15 Ma'anshan, China World Tennis Tour Hard Japan Koki Matsuda 1–6, 6–7(7–9)
Loss 4–5 Jul 2025 M15 Ma'anshan, China World Tennis Tour Hard Australia Akira Santillan 6–3, 3–6, 6–7(5–7)
Win 5–5 Aug 2025 M15 Singapore, Singapore World Tennis Tour Hard (i) Japan Sora Fukuda 6–1, 5–7, 6–2
Win 6–5 Aug 2025 M15 Singapore, Singapore World Tennis Tour Hard (i) Japan Koki Matsuda 2–6, 7–5, 7–5
Loss 6–6 May 2026 M25 Nakhon Pathom, Thailand World Tennis Tour Hard South Korea Chung Hyeon 4–6, 2–6

References

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