Tseng Chun-hsin ( zh, t=曾俊欣, p=Zēng Jùnxīn; born 8 August 2001), also known as Jason Tseng, is a Taiwanese tennis player. He has a career-high singles ranking of world No. 83 by the ATP, achieved on 8 August 2022. Tseng is currently the No. 1 Taiwanese player. He was also the ITF junior No. 1, first reaching this ranking on 11 June 2018 after winning the French Open Boys' Singles. He is also part of the

Chinese Taipei Davis Cup team The Chinese Taipei men's national tennis team represents Taiwan in Davis Cup tennis competition and are governed by the Chinese Taipei Tennis Association. Chinese Taipei will compete in the Davis Cup Qualifiers in 2024. History Chinese Taip ...

since 2018, with a W/L record of 1–0.

Early and personal life

Tseng began playing tennis at the age of five with his father, who worked at a night market in Taiwan. He first trained in an elementary school team located in Yonghe District,

New Taipei City New Taipei City is a Special municipality (Taiwan), special municipality located in regions of Taiwan, northern Taiwan. The city is home to an estimated population of 4,004,367 as of January 2023, making it the most populous city in Taiwan, a ...

. He is nicknamed "the Night Market Champion" ( zh, t=夜市球王) by the Taiwanese media as his parents used to sell

Tanghulu ''Tanghulu'' () or ''tang hulu'' (), also called ''bingtang hulu'' (), is a traditional Chinese snack consisting of several malt sugar coated fruits of Chinese hawthorn ('' Crataegus pinnatifida'') on a bamboo skewer. It is typically made by ...

at the

Lehua Night Market The Lehua Night Market () is a night market in Yonghe District, New Taipei, Taiwan. History In 2012, a group filed a complaint to the night market citing the community's safety was compromised by the presence of the night market vendors. In 201 ...

in New Taipei City in order to support his tennis career.

Career

Pre-2019: Junior years

He continued his training at the

Mouratoglou Tennis Academy The Mouratoglou Tennis Academy is a tennis academy and training center in Biot, Alpes-Maritimes, France. Originally named the Bob Brett Academy, it was founded in 1996 by Patrick Mouratoglou and Bob Brett. History In 1996, Patrick Mouratoglo ...

in France from age 13 to 17. During that period, he won singles title at the

Petits As Les Petits As – Le Mondial Lacoste (English: ''Little champions – The Lacoste world championship'') is a junior tennis tournament for players aged 12–14, held in Tarbes, France. This tournament is one of the five Super Category tournaments in ...

in 2015. In 2018, He won his first ITF Futures event in Vietnam. He won the boys' singles title at the French Open and claimed the Wimbledon boys' singles title in the following month.

2019: ATP and Masters debut

He made his ATP debut at the 2019 Miami Open as a wildcard. In the

2019 Summer Universiade The 2019 Summer Universiade (), officially known as the XXX Summer Universiade () and also known as Naples 2019, or Napoli 2019, was held in Naples, Italy, between 3 and 14 July 2019. It was initially scheduled for Brasília, Brazil in July 201 ...

, Tseng won the gold medal in men's singles.

2021–2022: Challenger breakthrough, Grand Slam & top 100 debuts

In December 2021, Tseng won his first ATP Challenger title in

Maia, Portugal Maia (), officially Maia Borough (), is a municipality in the Porto Metropolitan Area), '' Grande Porto'' subregion, in Norte Region, Portugal. It is located 11 km north of central Porto. The population in 2011 was 135,306, in an area of . The ...

. He made his debut in the top 200 at world No. 188 on 20 December 2021. He made his Grand Slam debut at the

2022 Australian Open The 2022 Australian Open was a Grand Slam tennis tournament that took place at Melbourne Park, Australia from 17 to 30 January 2022. It was the 110th edition of the Australian Open, the 54th in the Open Era, and the first Grand Slam of the ye ...

where he received a wildcard. The following month in February 2022, Tseng won his second ATP Challenger title in

Bangalore Bengaluru, also known as Bangalore (List of renamed places in India#Karnataka, its official name until 1 November 2014), is the Capital city, capital and largest city of the southern States and union territories of India, Indian state of Kar ...

, India. In April 2022, Tseng won his third ATP Challenger title in

Murcia Murcia ( , , ) is a city in south-eastern Spain, the Capital (political), capital and most populous city of the autonomous community of the Region of Murcia, and the Ranked lists of Spanish municipalities#By population, seventh largest city i ...

, Spain. He reached a career-high ranking of world No. 110 on 16 May 2022. He qualified for his second Grand Slam tournament at the

2022 French Open The 2022 French Open was a Grand Slam (tennis), Grand Slam tennis tournament played on outdoor clay courts. It was held at the Stade Roland Garros in Paris, France, from 22 May to 5 June 2022, comprising singles, doubles and mixed doubles play. J ...

to make his debut at this major. He lost in the first round in five sets in a match that lasted 4 hours 23 minutes against

João Sousa João Pedro Coelho Marinho de Sousa (born 30 March 1989), known as João Sousa (), is a Portuguese former professional tennis player. He achieved a career-high Association of Tennis Professionals, ATP singles ranking of No. 28 on 16 May 2016 a ...

. As a result of reaching the semifinals in

Bratislava Bratislava (German: ''Pressburg'', Hungarian: ''Pozsony'') is the Capital city, capital and largest city of the Slovakia, Slovak Republic and the fourth largest of all List of cities and towns on the river Danube, cities on the river Danube. ...

, Tseng made his debut in the top 100, at No. 97 on 13 June 2022. He participated in the

2022 Next Generation ATP Finals The 2022 Next Generation ATP Finals (also known as the Intesa Sanpaolo Next Gen ATP Finals for sponsorship reasons) was a men's exhibition tennis tournament for the eight highest-ranked singles players on the 2022 ATP Tour who are aged 21 and unde ...

as the sixth seed.

2023–2025: First Masters win and ATP 500 quarterfinal, back to top 100

Ranked No. 380, he made his debut in qualifying at the Masters 1000, the 2023 Rolex Shanghai Masters. He qualified for the main draw and defeated Alexander Shevchenko on his debut at this tournament, recording his first Masters win. As a result, he moved close to 80 positions back up, one position shy of the top 300 on 16 October 2023. In March 2024, he won his fourth Challenger at the

Kiskút Open The Kiskút Open Also known as the Székesfehérvár Open. Was a series of back-to-back tournaments for professional female tennis players played on indoor clay courts. The events were classified as $100,000, $60,000 and $15,000 ITF Women's Circu ...

in Szekesfehevar, Hungary and returned to the top 250 on 18 March 2024. Following his fifth Challenger title at the 2024 Internazionali di Tennis Città di Vicenza in June, and a final showing at the 2024 UniCredit Czech Open in Prostejov, he moved again 80 positions back up and returned to the top 175 on 10 June 2024. Ranked No. 159, he entered the second round of the main draw at the

Croatia Open The Croatia Open (currently sponsored by Plava laguna) is a men's ATP tennis tournament held in Umag, Croatia that is part of the 250 series of the ATP Tour. The tournament began in 1990 when it was part of Yugoslavia, and is the oldest tennis ...

as a lucky loser replacing third seed

Holger Rune Holger Vitus Nødskov Rune (; born 29 April 2003) is a Danish professional tennis player. He has been ATP rankings, ranked as high as world No. 4 in men's singles by the Association of Tennis Professionals (ATP), making him the highest-ranked Da ...

and defeated

Fabio Fognini Fabio Fognini (; born 24 May 1987) is an Italian professional tennis player. He has a career-high Association of Tennis Professionals, ATP ranking of world No. 9 achieved on 15 July 2019. Fognini's most successful surface is Clay court#Red clay, ...

to reach his first ATP Tour quarterfinal. Three weeks later he reached the final at the 2024 San Marino Open, losing to

Alexandre Müller Alexandre Müller (; born 1 February 1997) is a French professional tennis player. He has a career-high ATP singles ranking of world No. 39, achieved on 7 April 2025 and a doubles ranking of No. 263, attained in November 2024. He is currently ...

in a deciding set tiebreak. As a result, two weeks later, he returned to the top 115 on 19 August 2024. Following a second ATP career quarterfinal showing at the ATP 500

2025 Rio Open The 2025 Rio Open, also known as Rio Open presented by Claro for sponsorship reasons, was a professional men's tennis tournament played on outdoor clay courts. It was the 11th edition of the Rio Open, and part of the ATP Tour 500 tournaments of t ...

where he qualified and defeated third seed

Alejandro Tabilo Alejandro Tabilo Álvarez (born 2 June 1997) is a Chilean professional tennis player. He has been ranked by the ATP as high as world No. 19 in singles, achieved on 1 July 2024 and a doubles ranking of No. 108, attained on 6 January 2025. He is ...

, his biggest and first top-50 win, and local wildcard and favorite Thiago Monteiro, Tseng returned to the top 100 in the rankings on 24 February 2025. Tseng was only the second player representing Chinese Taipei to reach an ATP 500 quarterfinal, alongside

Yen-Hsun Lu Lu Yen-hsun (; born 14 August 1983) is a Taiwanese coach and former tennis player, who goes by the nickname Rendy Lu. He won the most titles on the ATP Challenger Tour in tennis history. His favorite surface is hardcourt, though several of his ...

ATP Challenger and ITF Tour finals

Singles 15 (9–6)

Doubles (2–0)

Junior Grand Slam finals

Singles (2–1)

Doubles (0–1)

Performance timeline

Singles

References

External links

* * * {{DEFAULTSORT:Tseng, Chun-hsin 2001 births Living people Taiwanese male tennis players French Open junior champions Wimbledon junior champions Tennis players at the 2018 Summer Youth Olympics Sportspeople from New Taipei Summer World University Games medalists in tennis FISU World University Games gold medalists for Chinese Taipei FISU World University Games bronze medalists for Chinese Taipei Grand Slam (tennis) champions in boys' singles Medalists at the 2019 Summer Universiade 21st-century Taiwanese sportsmen Tennis players at the 2022 Asian Games