# Thai-Son Kwiatkowski

Thai-Son Kwiatkowski (born February 13, 1995) is a Vietnamese American former tennis player. He played collegiately for the Virginia Cavaliers. On 29 May 2017, Kwiatkowski won the NCAA Men's Singles Championship.

## College career

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.
Other notable college achievements:
* 2018 NCAA Top 10 Award winner
* ACC Men's Tennis Scholar-Athlete of the Year (second straight year)
* Was also named the Virginia Athletic Department's Scholar Athlete of the Year for the second straight year
* Singles All-American, his third time earning the honor
* All-ACC First Team, his fourth all-conference honor but his first time being voted to the first team
* ITA Atlantic Region Senior Player of the Year
* NCAA All-Tournament Team at No. 2 Doubles
* ITA Indoors All-Tournament Team (No. 2 Singles and No. 2 Doubles)
* ITA Scholar-Athlete
* Repeated as the VaSID State Player of the Year
* Four-time member of the All-ACC Academic Team
* ACC Player of the Week (April 18)

## Professional career

After winning the NCAA singles championship, Kwiatkowski was awarded a wildcard into the main draw of the 2017 US Open. He faced the 23rd seed Mischa Zverev in the first round, losing in five sets.
He won his maiden Challenger title in Newport Beach in 2020. He was also awarded a wildcard into the main draw of the 2020 US Open, where he lost in the first round to Kwon Soon-woo in four sets.
In August 2024, he announced his retirement after playing his last singles match at the 2024 Winston-Salem Open.

## Personal life

Thai-Son's parents are Wendi Le 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.
On 23 February 2021, Thai-Son Kwiatkowski successfully obtained Vietnamese citizenship in order to play for Vietnam's national tennis team in upcoming tournaments. He immediately became the most accomplished tennis player to represent Vietnam after he obtained the citizenship and planned to represent the country in international competition. He is playing for Hung Thinh – Ho Chi Minh City team since October 2019.
Thai-Son is not the first foreign-born tennis player to be recruited by a Vietnamese domestic tennis team. Daniel Nguyen a Vietnamese American tennis player is playing for the Hai Dang - Tay Ninh team and obtained Vietnamese citizenship in 2019.

## ATP Challenger and Futures/ITF World Tennis Tour finals
### Singles: 9 (8 titles, 1 runner-up)

* Legend (singles)
* ATP Challenger Tour (1–0)
* Futures/ITF World Tennis Tour (7–1)
* Finals by surface
* Hard (7–1)
* Clay (1–0)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| 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 Oosterbaan | 6–4, 6–3 |
| Win | 5–0 | Feb 2020 | Newport Beach, USA | Challenger | Hard | Daniel Elahi Galán | 6–4, 6–1 |
| Win | 6–0 | Apr 2023 | M15 Sunrise, USA | World Tennis Tour | Clay | Tristan McCormick | 6–4, 7–6$^{(7–5)}$ |
| Loss | 6–1 | Oct 2023 | M15 Las Vegas, USA | World Tennis Tour | Hard | Bernard Tomic | 1–6, 6–4, 2–6 |
| Win | 7–1 | Mar 2024 | M25 Santo Domingo, Dominican Republic | World Tennis Tour | Hard | Nick Hardt | 6–4, 6–4 |
| Win | 8–1 | Mar 2024 | M25 Santo Domingo, Dominican Republic | World Tennis Tour | Hard | Andrés Andrade | 6–4, 7–6$^{(7–3)}$ |

### Doubles: 14 (5 titles, 9 runner-ups)

* Legend (doubles)
* ATP Challenger Tour (1–4)
* Futures/ITF World Tennis Tour (4–5)
* Finals by surface
* Hard (5–6)
* Clay (0–3)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Jun 2016 | USA F17, Charlottesville | Futures | Hard | Mac Styslinger | Greg Jones José Statham | 6–4, 6–1 |
| Win | 2–0 | Jun 2016 | USA F18, Winston-Salem | Futures | Hard | Jared Hiltzik | Austin Smith Dennis Uspensky | 6–4, 6–2 |
| Loss | 2–1 | Aug 2016 | Finland F1, Kaarina | Futures | Clay | José Statham | Herkko Pöllänen Mikael Torpegaard | 7–6$^{(7–4)}$, 3–6, [6–10] |
| Loss | 2–2 | Dec 2016 | Puerto Rico F1, Mayagüez | Futures | Hard | Quinton Vega | Nebojša Perić Ilija Vučić | 1–6, 3–6 |
| Win | 3–2 | Mar 2017 | France F5, Toulouse | Futures | Hard (i) | Fabien Reboul | Niels Desein Yannick Jankovits | 6–3, 7–6$^{(7–4)}$ |
| Loss | 3–3 | Jun 2017 | USA F20, Rochester | Futures | Clay | Luca Corinteli | Hugo Di Feo Mikael Torpegaard | 6–7$^{(5–7)}$, 4–6 |
| Loss | 3–4 | Oct 2017 | USA F33, Houston | Futures | Hard | Austin Krajicek | Aron Hiltzik Dennis Nevolo | 6–7$^{(3–7)}$, 3–6 |
| Loss | 3–5 | Dec 2017 | Mexico F7, Metepec | Futures | Hard | John Paul Fruttero | Gonzalo Escobar Manuel Sánchez | 3–6, 3–6 |
| Win | 4–5 | Jul 2018 | Canada F4, Kelowna | Futures | Hard | Julian Bradley | Charlie Emhardt Samuel Shropshire | 7–6$^{(7–5)}$, 7–5 |
| Loss | 4–6 | Apr 2019 | Tallahassee, USA | Challenger | Clay | Noah Rubin | Roberto Maytín Fernando Romboli | 2–6, 6–4, [7–10] |
| Loss | 4–7 | Jul 2019 | Winnetka, USA | Challenger | Hard | Christopher Eubanks | JC Aragone Bradley Klahn | 5–7, 4–6 |
| Win | 5–7 | Mar 2020 | Indian Wells, USA | Challenger | Hard | Denis Kudla | Sebastian Korda Mitchell Krueger | 6–3, 2–6, [10–6] |
| Loss | 5–8 | Oct 2023 | Charlottesville, USA | Challenger | Hard (i) | Denis Kudla | John-Patrick Smith Sem Verbeek | 6–3, 3–6, [5–10] |
| Loss | 5–9 | Jan 2024 | Indian Wells, USA | Challenger | Hard | Alex Lawson | Ryan Seggerman Patrik Trhac | 2–6, 6–7$^{(3–7)}$ |