Kwiatkowski in 2018
|Country (sports)||United States|
|Born||February 13, 1995|
Charlotte, North Carolina
|Height||6 ft 2 in (1.88 m)|
|Plays||Right-handed (two-handed backhand)|
|College||University of Virginia|
|Prize money||$ 255,629|
|Career record||0–4 (0%) (Grand Slam, ATP Tour level, and Davis Cup)|
|Career titles||1 ATP Challenger, 4 ITF Futures|
|Highest ranking||No. 181 (3 February 2020)|
|Current ranking||No. 183 (16 March 2020)|
|Grand Slam Singles results|
|Australian Open||Q1 (2020)|
|French Open||Q1 (2020)|
|US Open||1R (2017, 2020)|
|Career record||0–1 (0%)|
|Highest ranking||No. 232 (July 29, 2019)|
|Current ranking||No. 242 (16 March 2020)|
|Grand Slam Doubles results|
|US Open||1R (2019)|
|Last updated on: 22 March 2020.|
Thai-Son Kwiatkowski (born February 13, 1995) is an American tennis player. He played collegiately for the Virginia Cavaliers. On May 29, 2017, Kwiatkowski won the NCAA Men's Singles Championship. This victory earned him a wild card into the main draw of the 2017 US Open where he lost in the first round to Mischa Zverev.
Coming out of high school, he was the nation's top recruit. Kwiatkowski was on three national championship teams during his time at Virginia. As a sophomore, he tied the school's single season wins record, going 44-8 during the season. On September 11, 2016, Kwiatkowski won the American Collegiate Invitational, which earned him a wild card into the qualifying tournament for the 2017 US Open. After his senior season, he was named first-team all-ACC. Kwiatkowski won the singles title at the 2017 NCAA Men's Singles Championship, defeating William Blumberg in the final.
After winning the NCAA singles championship, Kwiatkowski was awarded a wild card into the main draw of the 2017 US Open. He faced the 23rd seed Mischa Zverev in the first round, losing in five sets.
Thai-Son's parents are Wendi and Tim Kwiatkowski. He has a younger brother named Liem. His parents are both University of Virginia alumni. Kwiatkowski is of Vietnamese and Polish descent. Kwiatkowski majored in commerce.
Challenger and Futures finals
Singles: 5 (5–0)
|Win||1–0||Dec 2016||Puerto Rico F1, Mayagüez||Futures||Hard||Alexios Halebian||6–1, 6–4|
|Win||2–0||Oct 2017||USA F33, Houston||Futures||Hard||Sebastian Korda||6–2, 6–2|
|Win||3–0||May 2018||Singapore F1, Singapore||Futures||Hard||Soichiro Moritani||6–2, 6–2|
|Win||4–0||Jun 2018||Canada F3, Calgary||Futures||Hard||Paul C. Oosterbaan||6–4, 6–3|
|Win||5–0||Feb 2020||Newport Beach, USA||Challenger||Hard||Daniel Elahi Galán||6–4, 6–1|
Doubles: 12 (5–7)
|Win||1–0||Jun 2016||USA F17, Charlottesville||Futures||Hard||Mac Styslinger|| Greg Jones
|Win||2–0||Jun 2016||USA F18, Winston-Salem||Futures||Hard||Jared Hiltzik|| Austin Smith
|Loss||2–1||Aug 2016||Finland F1, Kaarina||Futures||Clay||Jose Statham|| Herkko Pöllänen
|7–6(7–4), 3–6, [6–10]|
|Loss||2–2||Dec 2016||Puerto Rico F1, Mayagüez||Futures||Hard||Quinton Vega|| Nebojša Perić
|Win||3–2||Mar 2017||France F5, Toulouse||Futures||Hard (i)||Fabien Reboul|| Niels Desein
|Loss||3–3||Jun 2017||USA F20, Rochester||Futures||Clay||Luca Corinteli|| Hugo Di Feo
|Loss||3–4||Oct 2017||USA F33, Houston||Futures||Hard||Austin Krajicek|| Aron Hiltzik
|Loss||3–5||Dec 2017||Mexico F7, Metepec||Futures||Hard||John Paul Fruttero|| Gonzalo Escobar
|Win||4–5||Jul 2018||Canada F4, Kelowna||Futures||Hard||Julian Bradley|| Charlie Emhardt
|Loss||4–6||Apr 2019||Tallahassee, USA||Challenger||Clay||Noah Rubin|| Roberto Maytin
|2–6, 6–4, [7–10]|
|Loss||4–7||Jul 2019||Winnetka, USA||Challenger||Hard||Christopher Eubanks|| JC Aragone
|Win||5–7||Mar 2020||Indian Wells, USA||Challenger||Hard||Denis Kudla|| Sebastian Korda
|6–3, 2–6, [10–6]|
- Leung, Brian J. "NCAA CHAMPION! Thai-Son Kwiatkowski wins the NCAA Singles Title!". streakingthelawn.com. Retrieved May 29, 2017.
- "DI men's tennis championship: Virginia's Thai-Son Kwiatkowski wins NCAA men's singles title". NCAA.com. Retrieved June 13, 2017.
- "UVA bio". virginiasports.com. Retrieved May 29, 2017.
- "Kwiatkowski and Collins Win American Collegiate Invitational Singles Titles". longislandtennismagazine.com. Retrieved May 29, 2017.
- Karnik, Danny. "2017 MEN'S TENNIS ALL-CONFERENCE TEAM ANNOUNCED". theACC.com. Archived from the original on July 31, 2017. Retrieved May 29, 2017.
- Ratcliffe, Jerry. "Virginia's Kwiatkowski captures NCAA singles title". dailyprogress.com. Retrieved June 13, 2017.
- "The Latest: No. 23 seed Zverev prevails over NCAA champ". washingtonpost.com. August 28, 2017. Retrieved September 11, 2017.
- Ratcliffe, Jerry (May 29, 2017). "Ratcliffe: Kwiatkowski overcomes his demons, goes out as a champion". The Daily Progress. Charlottesville, Virginia. Retrieved September 24, 2017.