Chun Hsin Tseng Bio
Chun Hsin Tseng (Chinese: 曾俊欣; pinyin: Zēng Jùnxīn; born 8 August 2001) is a Taiwanese professional tennis player widely regarded as the top male singles player in Chinese Taipei. Standing 175 cm tall, he turned professional in 2019 and has built his reputation through standout junior results, ATP Challenger titles, and steady climbs back into the top 100 of the ATP rankings. Tseng is also a Davis Cup representative for Chinese Taipei, debuting in the team competition in 2018. He is recognized in Taiwanese media by the affectionate nickname “the Night Market Champion.”
Tseng reached a career-high singles ranking of world No. 83 on 8 August 2022, and he returned to the top 100 in February 2025 after a strong run at an ATP 500 event. He has competed in Grand Slam main draws, Masters 1000 tournaments, ATP 500 events, and ATP Challenger Tour events, building one of the most complete resumes of any Taiwanese player in recent memory.
Early Life and Background
Chun Hsin Tseng was born on 8 August 2001 in Taipei, Taiwan. He grew up in a humble household and began playing tennis at the age of five, training alongside his father, who worked at a local night market. To support his early development, his parents sold tanghulu, a traditional candied fruit snack, at the Lehua Night Market in New Taipei City, an experience that later inspired his popular nickname in the Taiwanese press.
His first organized training came at an elementary school team in Yonghe District, New Taipei City, where coaches quickly recognized his natural feel for the game. Tseng has continued to base his training out of Taipei, the city he still calls home. His upbringing at the night market became a recurring theme in his story, giving him a public image that connects his professional sport to his family’s working-class roots.
Path to Tennis
Chun Hsin Tseng’s path to professional tennis accelerated when, at the age of 13, he moved to France to train at the Mouratoglou Tennis Academy, where he stayed until age 17. The academy, run by longtime coach Patrick Mouratoglou, gave him access to world-class facilities, sparring partners, and coaching that helped him transition from a promising junior into a future ATP-level competitor. During this formative period, he won the prestigious Petits As title in 2015, one of the most respected under-14 events in the world.
In 2018, he captured his first ITF Futures title in Vietnam and, later that year, won the French Open Boys’ Singles title, a result that pushed him to the ITF junior No. 1 ranking on 11 June 2018. He followed that triumph with the Wimbledon boys’ singles title the next month, cementing his status as one of the top junior players in the world. These achievements earned him wildcards into ATP events and helped him join the Chinese Taipei Davis Cup team in 2018.
Chun Hsin Tseng Career
Early Career (2018–2019)
Chun Hsin Tseng’s early senior career began in 2018 with his first ITF Futures title in Vietnam, the same year he became the ITF junior world No. 1. He made his ATP main-draw debut as a wildcard at the 2019 Miami Open, an early sign of the faith tournament directors placed in his potential. That same year, he won the gold medal in men’s singles at the 2019 Summer Universiade, giving Taiwan one of its biggest individual tennis results of the decade.
His 2019 season balanced ATP exposure with a heavy schedule of ITF and junior-level events, allowing him to gain match experience against seasoned professionals. By the end of the year, he had established himself as Taiwan’s top-ranked junior and a strong candidate to climb the ATP ladder over the following seasons.
Challenger Breakthrough (2021–2022)
In December 2021, Chun Hsin Tseng won his first ATP Challenger title in Maia, Portugal, a breakthrough that pushed him into the top 200 at No. 188 on 20 December 2021. He then made his Grand Slam debut as a wildcard at the 2022 Australian Open. The early months of 2022 brought two more Challenger titles, in Bangalore, India in February and in Murcia, Spain in April, lifting his ranking to a then career-high No. 110 on 16 May 2022.
He qualified for the 2022 French Open, his second Grand Slam, and battled João Sousa in a five-set first-round loss that lasted four hours and 23 minutes. By reaching the semifinals in Bratislava, he entered the top 100 for the first time at No. 97 on 13 June 2022, before climbing further to a career-best No. 83 on 8 August 2022, his 21st birthday. Later in 2022, he represented the Next Generation of tennis at the 2022 Next Generation ATP Finals as the sixth seed.
Return to Top 100 (2023–2025)
Ranked No. 380, Tseng qualified for the main draw of the 2023 Rolex Shanghai Masters, a Masters 1000 event, and defeated Alexander Shevchenko for his first Masters-level win, vaulting close to 80 positions up the rankings in October 2023. In 2024, he added two more Challenger titles, at the Kiskút Open in Székesfehérvár, Hungary in March and the Internazionali di Tennis Città di Vicenza in June, then reached his first ATP Tour quarterfinal as a lucky loser at the Croatia Open in Umag, where he beat Fabio Fognini. He also reached the final of the 2024 San Marino Open, losing a tight deciding-set tiebreak to Alexandre Müller.
His 2025 season opened with a run to the quarterfinals of the ATP 500 Rio Open, where he qualified, upset third seed Alejandro Tabilo for his first top-50 win, and then defeated local wildcard Thiago Monteiro. The result returned him to the top 100 of the ATP rankings on 24 February 2025, making him only the second Chinese Taipei player, alongside Lu Yen-hsun, to reach an ATP 500 quarterfinal.
Driving Style and Strengths
Chun Hsin Tseng is recognized for his composed baseline game, clean ball-striking, and willingness to compete in long rallies. His training at the Mouratoglou Tennis Academy sharpened his tactical discipline, and his results against top-50 opponents such as Alejandro Tabilo show a player comfortable on both clay and hard courts. He pairs physical endurance with a calm temperament, allowing him to recover from difficult seasons and steadily climb the rankings.
Notable Events and Milestones
Among his career-defining moments are his 2018 French Open Boys’ Singles and Wimbledon Boys’ Singles titles, his 2022 career-high ranking of No. 83 on his 21st birthday, his first Masters 1000 win at the 2023 Rolex Shanghai Masters, and his 2025 return to the top 100 after reaching the Rio Open quarterfinals. His rise from a night-market childhood in New Taipei City to the ATP top 100 remains one of Taiwanese tennis’s most compelling stories.
Chun Hsin Tseng Career Wins
Chun Hsin Tseng’s career win portfolio includes one ITF Futures title, five ATP Challenger titles, one Summer Universiade gold medal, a Masters 1000 main-draw win, and one ATP Tour quarterfinal at the ATP 500 level. His first senior-level title came at the ITF Futures event in Vietnam in 2018, and his first Challenger trophy came in Maia, Portugal in December 2021.
ATP Challenger Highlights
Tseng’s Challenger titles came in Maia (2021), Bangalore (2022), Murcia (2022), Székesfehérvár (2024), and Vicenza (2024). His most recent Challenger triumph came at the 2024 Internazionali di Tennis Città di Vicenza in June, after which he returned to the top 175 on 10 June 2024. He has also reached additional Challenger finals, including a final showing at the 2024 UniCredit Czech Open in Prostějov and a final at the 2024 San Marino Open.
Other Wins and Performances
At the junior level, Tseng captured the 2015 Petits As, the 2018 French Open Boys’ Singles, and the 2018 Wimbledon Boys’ Singles, the latter two titles contributing to his ITF junior No. 1 ranking. He added the men’s singles gold medal at the 2019 Summer Universiade and posted a 1–0 win-loss record in Davis Cup play for Chinese Taipei.
Chun Hsin Tseng Family
Family Background and Racing Lineage
Chun Hsin Tseng was raised by parents who worked at the Lehua Night Market in New Taipei City, where they sold tanghulu to help fund his early tennis training. His father introduced him to the sport at age five, working with him on court before he moved into more formal training at an elementary school team in Yonghe District.
Personal Life
Tseng continues to reside in Taipei, Taiwan, the city of his birth. His family remains closely tied to his career, with his parents’ night-market background giving him the well-known “Night Market Champion” nickname that is widely used in Taiwanese media coverage of his matches.
2025 Season Performance
Chun Hsin Tseng’s 2025 season opened with one of the most important weeks of his career at the ATP 500 Rio Open. After qualifying, he defeated third seed Alejandro Tabilo for his first top-50 win and then handled local wildcard Thiago Monteiro to reach the quarterfinals. The run returned him to the top 100 in the ATP rankings on 24 February 2025 and marked him as only the second Chinese Taipei player, after Lu Yen-hsun, to reach an ATP 500 quarterfinal.
Following Rio, Tseng continued to compete on the ATP Tour and Challenger circuits, using his ranking to enter higher-level events and pursue deeper draws. His combination of Challenger titles and a top-100 ranking gave him direct entry into main draws, reducing the wear of qualifying rounds and allowing him to focus on match play.
Heading deeper into 2025, Tseng’s outlook is shaped by his experience at Masters 1000 and ATP 500 level, his proven ability to upset top-50 opponents, and the continued support of his Taipei-based team. With his place in the top 100 secure, he will look to push toward a new career-high ranking and add to his collection of Challenger and ATP-level results throughout the rest of the season.