Learner Tien pulled off a massive upset against Daniil Medvedev at the Australian Open. So, who is Tien, the 19-year-old out of California?

The Irvine native and 19-year-old qualifier, who played one semester at USC, wins a 4-hour, 49-minute thriller that ends at nearly 3 a.m. in Melbourne

American teen Learner Tien pulled off the biggest upset so far at the 2025 Australian Open, ousting Russian Daniil Medvedev -- the No. 5 player in the world -- in a 4-hour, 49-minute thriller at Margaret Court Arena.

No. 5 Daniil Medvedev, 6-3, 7-6 (4), 6-7 (8), 1-6 ... Iva Jovic, 6-0, 6-3 No. 8 Emma Navarro def. Wang Xiyu, 6-3, 3-6, 6-4 No. 9 Daria Kasatkina def. Wang Yafan, 6-2, 6-0 No. 10 Danielle Collins ...

There are six American men and five American women in the third round. Tommy Paul, Coco Gauff and Jessica Pegula all play Thursday. No. 17 Frances Tiafoe, a two-time U.S. Open semifinalist, was upset by Hungary’s Fábián Marozsán in five sets in the second round.

Iga Swiatek rushed through her first set in 26 minutes and completed her 6-0, 6-2 second-round win over Rebecca Sramkova in an hour at the Australian Open.

Teenage qualifier Learner Tien stunned last year's Australian Open runner-up Daniil Medvedev in an epic match ending ... raced past American wildcard Iva Jovic in straight sets. Emma Navarro, the eighth seed from the United States, will face Ons Jabeur ...

When they resumed, Medvedev broke and served for the victory ... So now I just focus on tennis.” Emma Navarro, a U.S. Open semifinalist last year and seeded in the top eight for the first ...

American Learner Tien upset No. 5 seeded Daniil Medvedev 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (10-7) at the 2025 Australian Open, in a 4-hour, 49-minute match that began Thursday night and ended early Frid

MELBOURNE: Australian Open women's champion Madison Keys returned to her career-best ranking on Monday and joins three other American women in the WTA top 10, while men's champion Jannik Sinner maintained his significant lead atop the ATP list.

In a new Daily Dose of Social Media, Iga Swiatek moves past the disappointment of the Australian Open and looks ahead with a positive mindset. Madison Keys celebrated her ‘early birthday present’

Who will finish in top eight of the ATP and WTA tours? Tim Henman and Laura Robson predict what will happen; watch all the action from the ATP and WTA Tours on Sky Sports Tennis and Sky Sports+ which is integrated into Sky TV,