 | |  |  |  | Open de Moselle Norrie vs Tien | 08 Nov 25 |
| | | | | Open de Moselle Tien vs Sachko | 07 Nov 25 |
| | | | | Open de Moselle Tien vs Berrettini | 06 Nov 25 |
| | | | | Open de Moselle Tien vs Echargui | 05 Nov 25 |
| | | | | Open de Moselle Tien vs Blanchet | 03 Nov 25 |
| |  | | | BNP Paribas Masters Rublev vs Tien | 28 Oct 25 |
| | | | | BNP Paribas Masters Tien vs Borges | 27 Oct 25 |
| | | |  | Shanghai Masters Medvedev vs Tien | 08 Oct 25 |
| | | | | Shanghai Masters Norrie vs Tien | 06 Oct 25 |
| | | | | Shanghai Masters Tien vs Moutet | 04 Oct 25 |
| | | | | Shanghai Masters Tien vs Kecmanovic | 03 Oct 25 |
| | | | | China Open Sinner vs Tien | 01 Oct 25 |
| | | | | China Open Cobolli vs Tien | 28 Sep 25 |
| | | | | China Open Cerundolo vs Tien | 26 Sep 25 |
| | | | | Hangzhou Open Tien vs Royer | 21 Sep 25 |
| | | | | Hangzhou Open Tien vs Zeppieri | 20 Sep 25 |
| | | | | Hangzhou Open Tien vs Navone | 17 Sep 25 |
| | | |  | US Open Djokovic vs Tien | 25 Aug 25 |
| | | | | Western and Southern Financial Group Masters Rublev vs Tien | 10 Aug 25 |
| | | | | Western and Southern Financial Group Masters Tien vs Riedi | 09 Aug 25 |
| | | |  | Canadian Open Michelsen vs Tien | 02 Aug 25 |
| | | | | Canadian Open Tien vs Opelka | 31 Jul 25 |
| | | | | Canadian Open Shapovalov vs Tien | 30 Jul 25 |
| | | | | Canadian Open Tien vs Smith | 27 Jul 25 |
| | | | | Citi Open Rublev vs Tien | 23 Jul 25 |
| | | | | Citi Open Tien vs Nava | 21 Jul 25 |
| | | |  | Wimbledon Tien vs Jarry | 02 Jul 25 |
| | | | | Wimbledon Tien vs Basavareddy | 30 Jun 25 |
| | | |  | Mallorca Championships Tien vs Moutet | 26 Jun 25 |
| | | | | Mallorca Championships Shelton vs Tien | 25 Jun 25 |
| | | | | Mallorca Championships Tien vs Engel | 23 Jun 25 |
| | | |  | Stuttgart Open Nakashima vs Tien | 12 Jun 25 |
| | | | | French Open Zverev vs Tien | 27 May 25 |
| | | |  | Geneva Open Nishikori vs Tien | 19 May 25 |
| | | |  | Internazionali BNL dItalia Machac vs Tien | 10 May 25 |
| | | | | Internazionali BNL dItalia Tien vs Opelka | 08 May 25 |
| | | | | Mutua Madrid Open Giron vs Tien | 24 Apr 25 |
| | | | | BMW Open Griekspoor vs Tien | 14 Apr 25 |
| | | | | U.S. Mens Clay Court Championships Michelsen vs Tien | 01 Apr 25 |
| | | | | Miami Open Fonseca vs Tien | 20 Mar 25 |
| | | | | BNP Paribas Open Navone vs Tien | 07 Mar 25 |
| | | |  | Abierto Mexicano Machac vs Tien | 28 Feb 25 |
| | | | | Abierto Mexicano Zverev vs Tien | 27 Feb 25 |
| | | | | Abierto Mexicano Norrie vs Tien | 25 Feb 25 |
| | | | | Delray Beach Open Arnaldi vs Tien | 13 Feb 25 |
| | | | | Delray Beach Open Tien vs Walton | 12 Feb 25 |
| | | |  | Australian Open Sonego vs Tien | 20 Jan 25 |
| | | | | Australian Open Moutet vs Tien | 18 Jan 25 |
| | | | | Australian Open Medvedev vs Tien | 16 Jan 25 |
| | | | | Australian Open Ugo Carabelli vs Tien | 14 Jan 25 |
| | | |  | Hong Kong Tennis Open Norrie vs Tien | 30 Dec 24 |
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Learner Tien (born December 2, 2005) is an American professional tennis player. He has a career-high ATP singles ranking of world No. 48, achieved on 18 August 2025 and a doubles ranking of No. 344, achieved on that same date.
Early life
Tien was born in Irvine, California to Vietnamese Chinese Khuong Dan Tien and Huyen Tien. His first name, Learner, is inspired by his mother's profession — a math teacher. His sister is named Justice after his father's profession — a real estate lawyer.
Tien started taking tennis lessons in his early childhood, at a tennis facility next to his home. His potential was noticeable from the start, as he won his first tournament at the Racquet Club of Irvine at the age of 5.
Trophies 
Milestones
Former Youth Teams
None found...
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Tennis
