Learner Tien Biography: Age, Ranking, Height, Net Worth, Parents, Upsets, Coach, Titles

Learner Tien, is an American professional tennis player, is renowned for his versatile baseline game and mental composure, achieving a career-high ATP singles ranking of world No. 62 on June 30, 2025.

Known by his real name, Tien has emerged as a rising star, highlighted by his stunning upset over No. 5 Daniil Medvedev at the 2025 Australian Open, making him the youngest American to defeat a top-5 player at a major since 1990.

His quick footwork, powerful groundstrokes, and ability to adapt across surfaces have drawn attention, positioning him as a promising talent in American tennis.

Profile

• Full Name: Learner Tien
• Stage Name: Learner Tien
• Born: 2 December, 2005
• Age: 19 years old
• Birthplace: Irvine, California, USA
• Nationality: American
• Occupation: Professional Tennis Player
• Height: 5’11”
• Parents: Khuong Dan Tien, Huyen Tien
• Siblings: Justice Tien
• Spouse: None
• Children: None
• Relationship: Single
• Net Worth: $1.4 million

Early Life and Education

Learner Tien was born on December 2, 2005, in Irvine, California, to Vietnamese Chinese parents, Khuong Dan Tien, a real estate attorney, and Huyen Tien, a math teacher, who inspired his unique first name. He grew up with his older sister, Justice, named after their father’s profession.

Tien began playing tennis at age one and a half on community courts in Irvine, winning his first tournament at five. He graduated high school at 16, focusing early on tennis through the USTA Player Development program. His ethnicity is Vietnamese Chinese, and his religion is not publicly known.

Career

Learner Tien started his tennis career early, coached by his father until joining the USTA program at age 10. His junior career was stellar, with a 76–23 win-loss record and finals at the 2023 Australian Open and US Open juniors.

At 16, he won the 2022 USTA Boys’ 18s National Championship, earning a wildcard to the 2022 US Open, where he became the youngest men’s singles competitor since 2005, pushing Miomir Kecmanović to four sets. His early success included a 2023 Australian Open junior doubles title with Cooper Williams.

In 2024, Tien turned professional after a semester at USC, quickly making waves on the ATP Challenger Tour. He won his first Challenger title at the Cranbrook Tennis Classic, becoming the youngest American champion since Frances Tiafoe in 2016. Additional titles in Las Vegas and Fairfield saw him break into the top 125, and he reached the 2024 Next Gen ATP Finals final, losing to Jakub Menšík.

His 2025 Australian Open run, defeating Daniil Medvedev and Corentin Moutet, propelled him into the top 100 at No. 95, marking his first Grand Slam fourth-round appearance.

Currently, Tien continues to build his reputation, reaching the quarterfinals in Mallorca 2025 by defeating No. 10 Ben Shelton, the youngest American to beat a top-10 player on grass. His 3–2 record against top-10 players in 2025, including a win over No. 2 Alexander Zverev in Acapulco, showcases his giant-killing ability.

Coached by Eric Diaz and Jay Leavitt, Tien’s precise baseline play, quick footwork, and composure under pressure signal a bright future, with aspirations to crack the top 50 and compete for Grand Slam titles.

Social Media

• Instagram Handle: @learnertien

Personal Life

Learner Tien is currently single with no children, and maintains a low-profile personal life focused on his tennis career. Raised in Irvine, California, he credits his parents, Khuong and Huyen, for fostering his love for tennis and instilling a strong work ethic.

Net Worth

Learner Tien has an estimated net worth of $1.4 million USD, primarily from ATP Tour prize money totaling $1,386,817 and endorsements with brands like Wilson and Adidas. His 2024 Challenger titles and 2025 Australian Open fourth-round run significantly boosted his earnings.