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

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?

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.

Carlos Alcaraz faces a tricky test in the third round. Novak Djokovic and Aryna Sabalenka will also be in action on Friday in Melbourne.

Men’s World No. 1 Jannik eyes second successive singles title at Australian Open starting today, while Aryna, leader of the women’s rankings, is gunning for her

One of the most unorthodox yet enjoyable players to watch, Daniil Medvedev is a Russian ... Women’s Singles Power Rankings ft. Aryna Sabalenka, Coco Gauff Australian Open 2025: Women’s Singles ...

Teenage qualifier Learner Tien stunned last year's Australian Open runner-up Daniil Medvedev after Jannik Sinner roared back to take his place in the third round.

Sinner upset Djokovic in the semifinals here last year before coming back to beat Daniil Medvedev in the final 3-6, 3-6, 6-4, 6-4, 6-3 for his first Grand Slam singles title.

Daniil Medvedev ripped 24 aces and converted six break points to outlast Kasidit Samrej in a 3-hour, 8-minute first-round victory Tuesday at the 2025 Australian Open. No. 9 Andrey Rublev was the latest upset victim.

Sinner upset Djokovic in the semifinals here last year before coming back to beat Daniil Medvedev in the ... defending champions Sinner and Aryna Sabalenka walked into the official ceremony ...

Sabalenka, who was stunned in three sets by Andreeva in the quarter-finals of last year’s French Open, ramped up her serve at any hint of a threat from the 17-year-old and wrapped up the victory in just over an hour with an unreturnable serve.

The world No. 1 joked that she "need[s] to know who designed my character" upon learning that her AO Animated counterpart looks different in one big way.