History of Learner Tien in Timeline

Learner Tien is an American professional tennis player who achieved a career-high ATP singles ranking of No. 36 on September 29, 2025, and a doubles ranking of No. 343 on August 18, 2025.

Sections (2)

Full Timeline Career & Achievements

1990: Pete Sampras at Australian Open

In 1990, Pete Sampras reached the third round of the Australian Open.

2001: Andy Roddick Defeats Gustavo Kuerten

In 2001, Andy Roddick defeated Gustavo Kuerten at the Canadian Masters.

December 2, 2005: Birth of Learner Tien

On December 2, 2005, American professional tennis player Learner Tien was born.

Others born on this day/year

2005: Donald Young at US Open

In 2005, Donald Young, also 16, competed in the US Open.

2005: Rafael Nadal at Australian Open

In 2005, Rafael Nadal reached the fourth round of the Australian Open.

2016: Frances Tiafoe Challenger Title

In 2016, Frances Tiafoe won a Challenger title in Granby, Canada.

2017: Frances Tiafoe Masters 1000 Round of 16

In 2017, Frances Tiafoe reached the round of 16 at the Masters level in Cincinnati.

2019: Zachary Svajda at US Open

In 2019, Zachary Svajda competed in the US Open at 16 years old.

2020: Brandon Nakashima Quarterfinal

In 2020, Brandon Nakashima reached a quarterfinal in Delray Beach.

2022: Carlos Alcaraz Defeats Alexander Zverev

In 2022, Carlos Alcaraz defeated Alexander Zverev in the Madrid final.

2022: Grand Slam Results

In 2022, Learner Tien reached the Quarterfinals of Wimbledon.

2022: USTA Boys 18s National Championship and US Open Main Draw

In 2022, at 16 years old, Learner Tien won the 2022 USTA Boys 18s National Championship, earning a wildcard into the main draw of the 2022 US Open. He was the youngest player to compete in the men’s singles main draw at the US Open since 2005. He lost to Miomir Kecmanović.

August 2023: US Open Appearance

In August 2023, Learner Tien received a wildcard to the 2023 US Open for his second major appearance and lost to Frances Tiafoe in the first round.

2023: Junior Grand Slam Finals and ITF Ranking

In 2023, Learner Tien had a successful junior career, reaching two junior Grand Slam finals at the Australian Open and the US Open, resulting in a combined ITF ranking of world No. 4. He also won the 2023 Australian Open in doubles with Cooper Williams.

2023: Grand Slam Results

In 2023, Learner Tien reached the final of the Australian Open and US Open, the Semifinals of the French Open, and the Quarterfinals of Wimbledon.

2023: Australian Open Win

In 2023, Learner Tien won the Australian Open.

July 2024: Challenger Title and Ranking Increase

In July 2024, Learner Tien received a wildcard for the 2024 Cranbrook Tennis Classic in Bloomfield Hills, Michigan, where he won his maiden Challenger title, becoming the youngest American Challenger champion since Frances Tiafoe in 2016. He also won the M15 in Lakewood, California, increasing his winning streak to 25. At the end of July, he made the quarterfinals at the 2024 Chicago Men's Challenger and reached the top 250 in the rankings on 29 July 2024.

August 2024: Winston-Salem Open Quarterfinal and Ranking Increase

In August 2024, Learner Tien qualified for the main draw at the 2024 Winston-Salem Open, recorded his first three ATP Tour wins, and reached his first ATP quarterfinal, becoming the youngest American ATP tour-level quarterfinalist since Brandon Nakashima in 2020. As a result, he climbed to world No. 191 on 26 August 2024.

September 2024: Challenger Title and Ranking Increase

In September 2024, Learner Tien won his second Challenger title in Las Vegas and moved up to No. 151 in the singles rankings.

October 2024: Fairfield Challenger Title and Ranking Increase

In October 2024, Learner Tien won another title at the Fairfield Challenger and reached the top 125 in the rankings, achieving world No. 124.

November 2024: Next Generation ATP Finals Qualification

In November 2024, Learner Tien, at 18 years old, qualified for the 2024 Next Generation ATP Finals.

March 2025: ATP 500 Quarterfinal and Ranking Increase

In March 2025, Learner Tien qualified for the main draw at the 2025 Abierto Mexicano Telcel and defeated Alexander Zverev to reach his first ATP 500-level quarterfinal, moving into the top 70 in the singles rankings on 3 March 2025.