Chun-Hsin Tseng, the Taiwanese tennis star also known as Jason Tseng, has been grinding on the ATP circuit with solid Challenger wins and some big upsets. He’s currently around world No. 115, showing steady form in 2026 with a mix of hard and clay results that keep him competitive.
Chun-Hsin Tseng’s Biography
| Attribute | Details |
| Full Name | Tseng Chun-hsin (曾俊欣) |
| Nickname | Jason Tseng, “Night Market Champion” (夜市球王) |
| Date of Birth | August 8, 2001 |
| Age | 24 years old |
| Nationality | Taiwanese |
| Birthplace | Taipei, Taiwan |
| Height | 5 ft 9 in (175 cm) |
| Weight | 143 lbs (65 kg) |
| Handedness | Right-handed, two-handed backhand |
| Turned Professional | 2019 |
| Event | ATP Tour (Singles & Doubles) |
| Coach | Benjamin Ebrahimzadeh |
| Career Prize Money | ~$1,606,883 |
| ATP Challenger Titles | 5 |
| Junior Grand Slam Titles | 2 (French Open & Wimbledon, 2018) |
| Marital Status | Unmarried |
| Spouse / Partner | N/A |
| N/A |
Tseng is the son of Yu Te (father) and Chung Han Tsai (mother), and he has a brother named Yun Di. His family’s sacrifice of working at the Lehua Night Market in New Taipei City to fund his tennis journey is one of the most inspiring backstories in Asian tennis, earning him the beloved nickname “Night Market Champion” across Taiwan.
Early Career
Tseng began playing tennis at age five under the guidance of his father. He moved to the prestigious Mouratoglou Tennis Academy in France at age 13, training there until he was 17. In 2015, he won the Petits As tournament, one of the most prestigious events in junior tennis.
His breakout year came in 2018 when he became the ITF Junior World No. 1 and won boys’ singles titles at both the French Open (defeating Sebastián Báez) and Wimbledon (defeating Jack Draper 6-1, 6-7, 6-4). He became the first Taiwanese player ever to win the Wimbledon Boys’ Singles title and only the second Asian to do so. He also reached the Australian Open Junior final that year, losing to Sebastian Korda.
Professional Career
Tseng turned professional in 2019 and made his ATP debut at the Miami Open as a wildcard. That same year, he won the gold medal in men’s singles at the 2019 Summer Universiade in Naples. His professional breakthrough came in late 2021 when he claimed his first ATP Challenger title in Maia, Portugal.
In 2022, Tseng went on a tear, winning Challenger titles in Bangalore and Murcia, and making his Grand Slam debut at the Australian Open with a wildcard entry. He reached the top 100 by June 2022 and peaked at No. 83 in August. He also competed at the 2022 Next Generation ATP Finals as the sixth seed.
After a ranking dip in 2023, Tseng rebounded by winning two more Challenger titles in 2024 (Székesfehérvár and Vicenza). In 2025, he reached the quarterfinals of the ATP 500 Rio Open, defeating third seed Alejandro Tabilo for his first top-50 win, and returned to the top 100.
Chun-Hsin Tseng’s Net Worth Details
As of 2026, Chun-Hsin Tseng’s net worth is estimated to be approximately $1 million to $2 million. This figure includes his career prize money earnings, which have crossed the $1.6 million mark, along with income from endorsement deals and sponsorships. With his continued participation in ATP main draw events and Grand Slams, his earnings trajectory is on the rise.
Prize Money
| Year | Prize Money |
| 2019 | $52,377 |
| 2020 | $11,323 |
| 2021 | $35,695 |
| 2022 | $506,075 |
| 2023 | $101,069 |
| 2024 | $170,358 |
| 2025 | $558,310 |
| 2026 (partial) | $27,066 |
His best earning year was 2025, where he collected over $558,000 thanks to deep runs at ATP-level events. The 2022 season was also a standout year financially when he earned over $506,000 during his rapid climb into the top 100.
Career Earnings
| Category | Amount |
| Total Career Prize Money | ~$1,606,883 |
| Estimated Net Worth | $1 million – $2 million |
| Best Single Season Earnings | $558,310 (2025) |
| Career-High Singles Ranking | No. 83 (August 8, 2022) |
| ATP Challenger Titles | 5 |
| ITF Futures/WTT Titles | 4 |
| Career Singles W-L (ATP level) | 17–38 |
| Career Total W-L (all levels) | 275–184 (59.91%) |
Tseng’s total career record across all levels stands at an impressive 275 wins and 184 losses, translating to a 59.91% win rate. His performance is strongest on hard courts and clay at the Challenger level, where he boasts a 60%+ win rate on both surfaces.
Endorsements
Chun-Hsin Tseng has not publicly disclosed extensive endorsement deals, and detailed sponsorship information remains limited. Like most players ranked outside the top 50, his primary income stream comes from prize money rather than large-scale endorsement contracts. He has been recognized by Tatler Asia’s Gen.T list in 2019, which highlights young leaders and changemakers, boosting his visibility in the Asian market.
As his ranking and profile continue to grow—especially after strong performances at ATP 500 and Masters-level events—he is well-positioned to attract more significant sponsorship deals in the coming years. His compelling backstory as the “Night Market Champion” makes him a particularly marketable figure in the Taiwanese and broader Asian sporting landscape.
Career Records
| Opponent | Result | Tournament | Year | Score |
| Jack Draper | Win | Wimbledon Boys’ Singles Final | 2018 | 6-1, 6-7, 6-4 |
| Sebastián Báez | Win | French Open Boys’ Singles Final | 2018 | 7-6, 6-2 |
| Sebastian Korda | Loss | Australian Open Boys’ Singles Final | 2018 | 6-7, 4-6 |
| Nuno Borges | Win | Maia Challenger Final | 2021 | 5-7, 7-5, 6-2 |
| Borna Gojo | Win | Bangalore Challenger Final | 2022 | 6-4, 7-5 |
| João Sousa | Loss | French Open 1R | 2022 | 5 sets (4h 23m) |
| Fabio Fognini | Win | Croatia Open QF | 2024 | Won |
| Alejandro Tabilo | Win | Rio Open ATP 500 | 2025 | Won (first top-50 victory) |
| Alexandre Müller | Loss | San Marino Open Final | 2024 | 3-6, 6-4, 6-7 |
| Alexander Shevchenko | Win | Shanghai Masters 2R | 2023 | Won (first Masters victory) |
Tseng’s victory over Alejandro Tabilo (then ranked inside the top 50) at the 2025 Rio Open marked a major milestone as his first-ever win against a top-50 player. His 2023 Shanghai Masters run, where he qualified and won his first Masters-level match, also signaled his ability to compete with higher-ranked opponents.
FAQs
1. Who is Chun-Hsin Tseng?
Chun-Hsin Tseng, also known as Jason Tseng, is a Taiwanese professional tennis player born on August 8, 2001, in Taipei. He is the current No. 1 player from Taiwan and has a career-high ATP singles ranking of world No. 83 achieved in August 2022. Tseng turned professional in 2019 after a stellar junior career.
2. What are Chun-Hsin Tseng’s junior Grand Slam achievements?
Tseng won the boys’ singles titles at the 2018 French Open and Wimbledon, becoming the first player since 2012 to claim two junior majors in the same year. He was the runner-up at the 2018 Australian Open boys’ singles and reached ITF junior No. 1. These victories marked him as a top junior talent from Taiwan.
3. What is Chun-Hsin Tseng’s current ATP ranking?
As of 2026, Tseng holds the ATP singles ranking of No. 115 with 536 points. His career-high remains No. 83 from August 2022, and he has fluctuated in and out of the top 100 based on Challenger performances. He earned his first ranking points at age 15 in 2016.
4. How many ATP Challenger titles has Chun-Hsin Tseng won?
Tseng has secured nine Challenger and ITF singles titles, including five ATP Challenger wins: Maia 2021, Bengaluru 2022, Murcia 2022, Székesfehérvár 2024, and Vicenza 2024. He also won four ITF Futures events early in his career, primarily on hard and clay surfaces.
5. What is Chun-Hsin Tseng’s best ATP Tour result?
Tseng reached his first ATP 500 quarterfinal at the 2025 Rio Open, defeating top-50 player Alejandro Tabilo and Thiago Monteiro after qualifying. He also made quarterfinals at the 2024 Croatia Open as a lucky loser, beating Fabio Fognini, and reached the final at the 2024 San Marino Challenger.
6. Has Chun-Hsin Tseng won any ATP Masters matches?
Yes, Tseng recorded his first Masters 1000 win at the 2023 Shanghai Masters by qualifying and defeating Alexander Shevchenko. He has a 2-5 record in Masters main draws, including appearances at Miami and Italian Open. His debut was at the 2019 Miami Open as a wildcard.
7. What is Chun-Hsin Tseng’s Grand Slam record?
Tseng has a 0-7 record in Grand Slam main draws, with first-round exits at the 2022 Australian Open, French Open, Wimbledon, and US Open, plus 2023 Australian Open and 2025 US Open and Wimbledon. He received a wildcard for his 2022 Australian Open debut.
8. What is Chun-Hsin Tseng’s playing style?
Tseng features an aggressive baseline game with a powerful forehand to dictate rallies, a solid backhand, and quick net transitions. His precise serve, nimble footwork, and mental composure under pressure make him versatile across surfaces, aided by exceptional court coverage.
9. What are some notable facts about Chun-Hsin Tseng’s background?
Nicknamed the “Night Market Champion,” Tseng started tennis at age five with his father, whose night market sales funded his career. He trained at the Mouratoglou Academy in France from age 13 and won gold in men’s singles at the 2019 Summer Universiade.
10. What is Chun-Hsin Tseng’s Davis Cup involvement?
Tseng has represented Chinese Taipei in the Davis Cup since 2018, holding a 1-0 singles win-loss record. As Taiwan’s top player, he continues to contribute to the team while focusing on individual rankings through Challengers and ATP events.