2018: First ITF titles and ATP Challenger final In March 2018, he won his first singles and doubles titles on the
ITF Men's Circuit. In the same year, he made his debut for the
Chinese Taipei Davis Cup team, where he won his single's tie against Shahin Khaledan of
Iran by a score of 4–6, 6–1, [10–8]. This would mark his first appearance as well as his first win at the
ATP Tour level. In September, Hsu reached his first career final on the
ATP Challenger Tour where he and partner
Jimmy Wang lost in the doubles final of the
2018 Kaohsiung Challenger to
Yang Tsung-hua and
Hsieh Cheng-peng 7–6(7–3), 2–6, [8–10], in an all-Taiwanese final.
2023: Major and Masters debuts and first wins, top 175 Hsu made his Grand Slam debut by
qualifying for the
2023 Australian Open, beating
Evan Furness,
Elias Ymer and
Alexandre Muller. He also qualified for the
US Open He reached a career high ranking of No. 158 on 16 October 2023. ==Performance timeline==