Chun-Hsin Tseng broke into the Top 100 in June 2022, reached a career-high No. 83 in August 2022, and qualified for the 2022 Next Gen ATP Finals. He has won 6 Challenger titles (including Maia in 2021 and back-to-back Vicenza titles in 2024 and 2025), and has produced notable tour-level runs with quarterfinals in Umag in 2024 (as a lucky loser) and a career-best win over No. 28 Tabilo in Rio de Janeiro in 2025 (as a qualifier). He won back-to-back Junior Grand Slams at 2018 Roland Garros and Wimbledon.