Chun Hsin Tseng Bio
Chun Hsin Tseng, also known as Jason Tseng, is a Taiwanese professional tennis player born on 8 August 2001 in Taipei, Taiwan. He has built a reputation as one of the leading figures in Taiwanese tennis, achieving a career-high singles ranking of world No. 83 on 8 August 2022. Tseng is currently the No. 2 Taiwanese player and has represented Chinese Taipei in Davis Cup competition since 2018.
Standing 1.75 m tall and playing right-handed with a two-handed backhand, Tseng turned professional in 2019 after a distinguished junior career. He trains under coach Benjamin Ebrahimzadeh and has earned more than US$1.7 million in career prize money. He resides in his hometown of Taipei, Taiwan.
Early Life and Background
Chun Hsin Tseng was born and raised in Taipei, Taiwan, in a family with modest means. His father worked at a night market, and the long hours and dedication of his parents inspired Tseng to begin playing tennis at the age of five. He first trained on an elementary school team based in Yonghe District, New Taipei City, where his talent quickly became apparent.
Tseng’s parents supported his growing passion for tennis by selling tanghulu at the Lehua Night Market in New Taipei City, helping to fund his early training and equipment. The Taiwanese media later nicknamed him the Night Market Champion in tribute to his family’s working-class background. His early grounding in local Taiwanese club play shaped a disciplined and hardworking approach to the sport.
Path to Professional Tennis
At age 13, Tseng moved to France to train at the Mouratoglou Tennis Academy, where he stayed until age 17. The academy provided world-class coaching and a competitive European training environment. During this period, he won the prestigious Petits As singles title in 2015, signaling his arrival on the international junior scene.
In 2018, Tseng claimed his first ITF Futures title in Vietnam, a breakthrough that confirmed his readiness for higher levels. That same year he won the boys’ singles title at the French Open and followed it up by winning the Wimbledon boys’ singles title the following month. By topping the ITF junior rankings, he established himself as one of the most promising young players in the world and transitioned to the professional circuit in 2019.
Chun Hsin Tseng Career
Early Career (2019–2020)
Tseng made his ATP debut at the 2019 Miami Open as a wildcard, marking his first appearance on the main tour. The same year, he captured the gold medal in men’s singles at the 2019 Summer Universiade, an important early senior achievement that validated his switch to the professional ranks.
His early professional years focused on building experience through Challenger and ITF events while adjusting to the demands of full-time touring. The 2020 season was disrupted globally, but Tseng continued to develop his game and gather crucial match practice against seasoned opponents.
Challenger Breakthrough (2021–2022)
In December 2021, Tseng won his first ATP Challenger title in Maia, Portugal, and broke into the top 200 at world No. 188 on 20 December 2021. The breakthrough was the culmination of patient work on the Challenger circuit and gave him direct entry into bigger events.
He made his Grand Slam debut at the 2022 Australian Open on a wildcard. In February 2022, Tseng won his second ATP Challenger title in Bangalore, India, and in April 2022 he added a third Challenger title in Murcia, Spain. After reaching the semifinals in Bratislava, he entered the top 100 for the first time at No. 97 on 13 June 2022. He also competed in the 2022 Next Generation ATP Finals as the sixth seed.
ATP Tour Establishment (2023–2024)
Ranked No. 380, Tseng qualified for the main draw of the 2023 Rolex Shanghai Masters and defeated Alexander Shevchenko to record his first Masters win, jumping nearly 80 positions in the rankings. The victory signaled his growing comfort against higher-ranked opposition.
In 2024, he won the Kiskút Open in Szekesfehérvár, Hungary, then claimed his fifth Challenger title at the 2024 Internazionali di Tennis Città di Vicenza in June. As a lucky loser at the 2024 Croatia Open, Tseng replaced third seed Holger Rune and defeated Fabio Fognini to reach his first ATP Tour quarterfinal. He later reached the final at the 2024 San Marino Open and returned to the top 115 in August 2024.
Return to Top 100 (2025)
Tseng qualified for the 2025 Rio Open, an ATP 500 event, and defeated third seed Alejandro Tabilo for his first top-50 win before beating local wildcard Thiago Monteiro to reach the quarterfinals. He returned to the top 100 on 24 February 2025, becoming only the second player representing Chinese Taipei to reach an ATP 500 quarterfinal, alongside Lu Yen-hsun.
He also competed at the Australian Open and Wimbledon in 2025, reaching the first round at both Grand Slams. His consistent results on the Challenger and ATP circuits have kept him in the upper tier of Taiwanese men’s tennis.
Driving Style and Strengths
Tseng is recognized for his aggressive baseline play and his comfort on faster surfaces, which has produced his best results at hard-court and indoor events. He uses a right-handed game with a two-handed backhand, allowing him to generate pace from both wings. His partnership with coach Benjamin Ebrahimzadeh has focused on tactical discipline and serving efficiency under pressure.
Notable Events and Milestones
His junior treble of the French Open and Wimbledon boys’ singles titles in 2018 remains the cornerstone of his résumé. His 2022 first-round French Open battle against João Sousa lasted 4 hours and 23 minutes and ended in five sets. His first ATP 500 quarterfinal at the 2025 Rio Open and his first top-50 win over Alejandro Tabilo are recent career-defining moments.
Chun Hsin Tseng Career Wins
Across singles and doubles, Tseng has compiled a professional career record of 17–38 in singles and 3–2 in doubles, with a career-high singles ranking of No. 83 and a career-high doubles ranking of No. 305, both achieved on 8 August 2022. He has yet to capture an ATP Tour singles or doubles title, but his five ATP Challenger singles titles and steady progression back into the top 100 mark him as a consistent threat at tour level.
ATP Challenger Highlights
Tseng won his first ATP Challenger title in Maia, Portugal, in December 2021, followed by titles in Bangalore, India (February 2022), and Murcia, Spain (April 2022). He added a fourth Challenger trophy at the Kiskút Open in Szekesfehérvár, Hungary, in March 2024 and a fifth at the 2024 Internazionali di Tennis Città di Vicenza in June 2024. His most recent Challenger title came at the 2024 Czech Open final in Prostějov.
Other Wins and Performances
Beyond Challenger titles, Tseng won the 2019 Summer Universiade gold medal in men’s singles and the 2015 Petits As. In 2018, he also won an ITF Futures event in Vietnam. These earlier titles laid the foundation for his later professional success.
Chun Hsin Tseng Family
Family Background and Tennis Lineage
Tseng’s family has deep ties to Taiwan’s night-market culture, with his parents formerly selling tanghulu at the Lehua Night Market in New Taipei City. Their dedication to funding his early tennis development played a central role in his rise, and the Night Market Champion nickname remains a tribute to those roots.
Personal Life
Tseng resides in Taipei, Taiwan, and continues to train under Benjamin Ebrahimzadeh. He keeps his personal life largely private, with no confirmed public information about a spouse or children.
2025 Season Performance
Tseng’s 2025 season has been highlighted by a strong return to form on the ATP Tour. His run to the quarterfinals at the 2025 Rio Open, including his first top-50 win over Alejandro Tabilo, marked his re-entry into the top 100 in February 2025. He has continued to compete in Grand Slam main draws at the Australian Open, French Open, Wimbledon, and US Open.
On the Challenger circuit, Tseng has used select events to maintain match sharpness and ranking security. His current ATP singles ranking stands near No. 244 as of mid-2025, and his partnership with Ebrahimzadeh continues to focus on consistency in closing out tight matches.
Looking ahead, Tseng is expected to balance ATP 500 events with Challenger-level events to defend ranking points and chase his first ATP Tour title. With his proven record against top-50 opponents and steady coaching, he remains the leading active men’s singles player from Chinese Taipei alongside his Davis Cup commitments.
