Learner Tien

Learner Tien (born December 2, 2005) is an American tennis player. He has a career-high ATP singles ranking of No. 269 achieved on 15 July 2024. He also has a career-high ATP doubles ranking of No. 754 achieved on 20 November 2023.

Early life
Tien was born in Irvine, California to Vietnamese parents. His first name, Learner, is inspired by his mother's profession - a math teacher. His sister is named Justice after his father's profession - an attorney.

Tien started playing tennis as an infant, and won his first tournament at the Racquet Club of Irvine at the age of 5.

Junior Career
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 with Cooper Williams.

Junior Grand Slam singles results
Australian Open: F (2023)

French Open: SF (2023)

Wimbledon: QF (2022, 2023)

US Open: F (2023)

Junior Grand Slam doubles results
Australian Open: W (2023)

French Open: QF (2023)

Wimbledon: 2R (2022)

US Open: 2R (2022)

2022-2023: Grand Slam debut
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-year-old Donald Young (also the champion at Kalamazoo) played in the 2005 US Open and the first 16-year-old to compete since Zachary Svajda in 2019. He lost in four sets to 32nd seed Miomir Kecmanović.

Tien received a wildcard into the 2023 US Open, and lost to Frances Tiafoe in the first round.