Learner Tien | Bio | ATP Tour

Personal
Career

Parents both played recreationally and was introduced into the sport at a very young age. He would hit with his family at their community courts in Irvine, Calif.
Was coached primarily by his father, Khuong, until he was brought into the USTA player development program around age 10-11.
Mother, Huyen, is a school teacher; has one older sister, Justice.
Says winning the the Boys' 18s National Hard Courts at the ages of 16 and 17 have been major stepping stones in his career.
Considers backhand as best shot and favorite surface is hard courts.
Favorite tournament is Indian Wells and played in qualifying draw earlier this year and lost in 1R to Garin 7-5 7-6(7)
Good friends with countryman Alex Michelsen.
Carlos Alcaraz inspired Tien to compete at a higher level and watch more tennis.

(UPDATED 26 AUGUST 2026)

Broke into Top 200 in August 2024, Top 100 in January 2025, Top 50 in August 2025 and achieved career-high No. 12 in August 2026 after reaching Montreal SF to become youngest American ATP Masters 1000 semi-finalist since Roddick in 2002.
Captured 1st ATP Tour title at 2025 Metz, defeating former Top 10 players Berrettini and Norrie en route to the title, becoming youngest American ATP Tour champion since Roddick, 19, at 2002 Houston.
Upset No. 5 Medvedev en route to 2025 Australian Open 4R as Q to be youngest man to defeat a Top-5 player at that event in PIF ATP Rankings history (since 1973) and No. 2 Zverev for biggest win of career to reach 2025 Acapulco QF.
Earned wins over clay-court champions Tsitsipas, No. 10 Bublik and Navone en route to 2026 Geneva title to become the youngest American man to win a tour-level title on European clay since his coach, Chang at 1989 Roland Garros.
Defeated Medvedev again to reach 1st Grand Slam QF at 2026 Australian Open and countryman No. 8 Shelton to advance to 1st ATP Masters 1000 QF at 2026 Indian Wells.
Qualified for 2024 and 2025 Next Gen ATP Finals, earning wins over Top-3 seeds, No. 1 Fils, No. 2 Michelsen, No. 3 Mensik en route to 2024 final before defeating Blockx in 2025 to become 1st left-handed champion in tournament history in 2025.
Went on a 28-match winning streak from May to July 2024, capturing ITF Tour titles at M15 San Diego twice, M15 Rancho Santa Fe, M15 Lakewood and biggest title of career – 1st Challenger title in Bloomfield Hills.
Defeated countryman No. 10 Shelton at 2025 Mallorca to become youngest American man to record a Top 10 win on grass in PIF ATP Rankings history (since 1973).
Received 2022 and 2023 US Open WCs after winning 2022 and 2023 USTA Boys' 18s National Championships and 2024 US Open WC by winning US Open Wild Card Challenge.
Peaked at No. 4 in juniors, advancing to finals of 2023 Australian Open (l. to Blockx) and 2023 US Open (l. to Fonseca) and defeated Blockx/Fonseca to capture 2023 Australian Open boys’ doubles title w/C. Williams.
Played a semester of college tennis at University of Southern California before turning pro in summer of 2023.

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