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Learner Tien

tennis player
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Bio He is an American tennis player.
Tien started playing tennis as an infant, and won his first tournament at the Racquet Club of Irvine at the age of 5.
Tien had a very successful career as a junior, compiling a 76-23 win-loss record and reaching two junior Grand Slam finals, at the 2023 Australian Open and the 2023 US Open, culminating with a ranking of world no. 4 in singles. He also reached the world no. 4 ranking in doubles, compiling a 36-18 win-loss record and winning the 2023 Australian Open, partnering Cooper Williams.
At just 16 years old, Tien won the 2022 USTA Boys 18s National Championship, which earned him a wildcard into the main draw of the 2022 US Open. This made him the youngest player to compete in the men’s singles main draw at the US Open since a then 16 years old Donald Young (also the champion at Kalamazoo) played in the 2005 US Open and also the first player aged 16 to compete since Zachary Svajda in 2019. He lost in four sets to 32nd seed Miomir Kecmanović.

In August 2023, he received a wildcard into the 2023 US Open but lost to Frances Tiafoe in the first round.

In July, he also received a wildcard for the 2024 Cranbrook Tennis Classic where he lifted his maiden Challenger title. At the end of July, two weeks later, he made again the quarterfinals at the 2024 Chicago Men's Challenger and reached the top 250 in the rankings on July 29, 2024. He reached his second Challenger semifinal of the season defeating eight seed Hong Seong-chan. A week later, he also made the quarterfinals at the 2024 Lexington Challenger but lost to Hugo Grenier.

He secured a main draw wildcard for the US Open by winning the US Open wildcard challenge.

Ranked No. 231, he qualified for the main draw at the 2024 Winston-Salem Open and defeated fellow qualifier Tristan Schoolkate and upset ninth seed Fábián Marozsán and Thiago Seyboth Wild to record his first three ATP Tour wins and reach his first quarterfinal in his career. He became the youngest American ATP tour-level quarterfinalist since Brandon Nakashima in 2020 (in Delray Beach). As a result he climbed close to 40 positions in the singles rankings to the top 195 on August 26, 2024.
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